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Short Term Acute Care HospitalVoluntary Non-Profit - Private

Mount Auburn Hospital

Mount Auburn Hospital · Cambridge, MA

330 Mount Auburn Street, Cambridge, MA 02138(617) 492-3500

4 of 5

CMS star rating

163

Beds

117,776

Inpatient discharges a year

$352.8M

Net patient revenue a year

35

In-network payers

Photo 1: Vistawhite, CC BY-SA 3.0, via Wikimedia Commons · Photo 2: Public domain (USGS NAIP, CONUS), via USGS National Map / USDA NAIP

About this hospital

Mount Auburn Hospital is a 163-bed voluntary non-profit - private hospital in Cambridge, MA, affiliated with Mount Auburn Hospital. Below you'll find publicly disclosed negotiated rates and facility details, including 35 in-network payers and 198 disclosed rate categories.

  • Rural referral center
  • Reclassified as rural
  • Disproportionate share hospital
  • ACO participant
CCN
220002
NPI
1689670259
Health system
Mount Auburn Hospital
Teaching
Major teaching hospital
County
Middlesex County
Metro area
Boston-Cambridge-Newton, MA-NH MSA
Medicare contractor
Jurisdiction K, National Government Services (14011)
In Medicare since
1966
Last CMS survey
2002

Prices for common services

The 24 services Mount Auburn Hospital most likely performs, ranked by likely volume and what it is paid. Each service names one insurer. * marks hidden insurer names; A, B and C rank the remaining rates from low to high and reset for each service.

Book a demo to see hidden insurer names, more payer rates, and hospital data, or start a free trial.

Medicine & Surgery · Inpatient

Major lower-extremity joint replacement without MCC

MS-DRG 470

$16,912 - $20,986

from 2 insurers · median $18,949

UnitedHealthcare$20,986
Insurer A*$16,912
Medicare $16,535Nearby hospitals $23,27319% below nearby hospitals

79 Medicare discharges for this DRG in CMS hospital data

CT imaging

CT abdomen and pelvis with contrast

CPT 74177

$1,103 - $1,646

from 2 insurers · median $1,374

Aetna$1,646
Insurer A*$1,103
Medicare $401Nearby hospitals $92948% above nearby hospitals

Common here, based on CMS Medicare volume

Childbirth · Inpatient

Vaginal delivery, hospital stay

MS-DRG 807

$7,915

negotiated rate

UnitedHealthcare$7,915

CMS lists this service as CPT 59400, the obstetrician's global fee. The hospital bills the delivery stay as MS-DRG 807, so these are facility case rates.

Hospital reports neonatal nursery services to CMS

Childbirth · Inpatient

Cesarean delivery, hospital stay

MS-DRG 788

$11,117

negotiated rate

UnitedHealthcare$11,117

CMS lists this service as CPT 59510, the obstetrician's global fee. The hospital bills the delivery stay as MS-DRG 788, so these are facility case rates.

Hospital reports neonatal nursery services to CMS

How the insurers pay at Mount Auburn Hospital

Median rate as a percent of Medicare across the outpatient services above, and how many services sit above or below the same insurer's median at nearby hospitals. * marks hidden insurer names. These table labels track the same insurers across services; the labels on each service card reset.

InsurerServicesMedian % of MedicareAbove nearbyBelow nearby
Insurer A*21
399%
190
Insurer B*3
351%
21
Insurer C*15
228%
65
Insurer D*4
-
02

How we chose these services: 4 appear in this hospital's own Medicare claims, 17 are common here based on CMS Medicare volume, and 3 are typical for the service lines it reports to CMS. Rates come from insurer and hospital price transparency files as of October 2026. Rates under a quarter of Medicare or over 20 times Medicare are left out as likely physician-fee rows or file errors. Book a demo to see all 300 CMS shoppable services for Mount Auburn Hospital, or start a free trial.

Insurance Accepted

Acceptance varies by plan and service. Confirm coverage with your insurer or the hospital's billing department.

Medicare
Aetna
BCBS
Cigna
United Healthcare (incl Optum, Rocky Mountain, Health Plan of Nevada, Sierra Health)
Ameri HealthAspirus Health PlanAvera Health PlansBanner HealthCenteneDean Health Plan

More about this hospital

  • Quality

    4 of 5 stars

    • 205 min in the ER before going home (US median 148)
    • Medicare readmissions penalty (-0.45%)
    See quality ratings
  • Doctors and services

    Accredited by The Joint Commission

    • Major teaching hospital
    • 26 services
    • 771 affiliated clinicians
    See doctors and services
  • Finances

    $352.8M net patient revenue

    • Operating margin on patient care -5.9%
    • $15.6M unreimbursed and uncompensated care
    • $11.9M net income
    See finances
  • Ownership and leadership

    Owned by Beth Israel Lahey Health, Inc.

    • Private (not for profit)
    • Edwin C Huang, chief executive
    See ownership and leadership

Tax IDs and NPIs insurers list

The employer identification numbers (EINs) health plans and networks list for Mount Auburn Hospital in the in-network rate files they publish, with the organization NPIs billed under each.

Tax ID (EIN)Plans and networks listing itOrganization NPIs
04-2103606Mount Auburn Hospital58Aetna, Cigna, United Healthcare (incl Optum, Rocky Mountain, Health Plan of Nevada, Sierra Health), Allied Benefit Systems, Ameri Health and 53 more1689670259 Mount Auburn Hospital1649254491 Mount Auburn Hospital1902168339 Mount Auburn Hospitaland 11 more
04-2474962Mount Auburn Pathologists INC17Aspirus Health Plan, Dean Health Plan, Denver Health Medical Plan, EmblemHealth, First Health and 12 more1194830471 Mount Auburn Pathologists Inc.1689670259 Mount Auburn Hospital

Source: PayerPrice analysis of insurers' Transparency in Coverage in-network files. An EIN can cover several hospitals and clinics in a health system, and insurers sometimes list other organizations' NPIs under it.

Location

330 Mount Auburn Street, Cambridge, MA 02138

(617) 492-3500

Get directions

Frequently asked questions

About Mount Auburn Hospital's rates and hospital price transparency.

How much does an MRI cost at Mount Auburn Hospital?

For MRI brain before and after contrast (CPT 70553), published negotiated rates at Mount Auburn Hospital range from $827 to $3,243 across 2 insurers. Blue Cross Blue Shield's rate is $827. The median at nearby comparable hospitals is $806. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a CT scan cost at Mount Auburn Hospital?

For CT abdomen and pelvis with contrast (CPT 74177), published negotiated rates at Mount Auburn Hospital range from $1,103 to $1,646 across 2 insurers. Aetna's rate is $1,646. The median at nearby comparable hospitals is $929. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a colonoscopy cost at Mount Auburn Hospital?

For Colonoscopy with polyp removal (CPT 45385), published negotiated rates at Mount Auburn Hospital range from $2,863 to $2,863 across 1 insurers. Aetna's rate is $2,863. The median at nearby comparable hospitals is $2,670. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does giving birth cost at Mount Auburn Hospital?

For Vaginal delivery, hospital stay (MS-DRG 807), published negotiated rates at Mount Auburn Hospital range from $7,915 to $7,915 across 1 insurers. UnitedHealthcare's rate is $7,915. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a mammogram cost at Mount Auburn Hospital?

For Screening mammography, bilateral (CPT 77067), published negotiated rates at Mount Auburn Hospital range from $206 to $432 across 3 insurers. Cigna's rate is $406. The median at nearby comparable hospitals is $240. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does hip or knee replacement cost at Mount Auburn Hospital?

For Major lower-extremity joint replacement without MCC (MS-DRG 470), published negotiated rates at Mount Auburn Hospital range from $16,912 to $20,986 across 2 insurers. UnitedHealthcare's rate is $20,986. The median at nearby comparable hospitals is $23,273. What a patient pays depends on their plan's deductible, coinsurance and network status.

What is Mount Auburn Hospital's CMS star rating?

Mount Auburn Hospital has a CMS overall hospital star rating of 4 out of 5 on Medicare Care Compare (CMS data released 2026-08-13). That is higher than 58% of US hospitals.

Is Mount Auburn Hospital a teaching hospital?

Yes. CMS counts 0.41 Medicare-funded residents per bed at Mount Auburn Hospital for fiscal year 2027, so it is a major teaching hospital.

Does Medicare penalize Mount Auburn Hospital for readmissions?

Yes. Under the Hospital Readmissions Reduction Program, Medicare cuts Mount Auburn Hospital's base inpatient payments by an estimated 0.45% in fiscal year 2027 for more readmissions than expected.

What are the most common Medicare inpatient stays at Mount Auburn Hospital?

In 2024, the most common were septicemia or severe sepsis without mv >96 hours with mcc (243 discharges), heart failure and shock with mcc (124 discharges), acute myocardial infarction, discharged alive with mcc (99 discharges).

For hospital finance and compliance teams

Running price transparency at a hospital like this one?

The data on this page comes from the files hospitals and payers publish. We help hospitals publish theirs correctly, and take a fresh look at their chargemaster.

Compliance MRF

Publish a CMS-compliant machine-readable file

We turn your chargemaster and payer contracts into the CMS template file, then keep it current as rates change.

CMS v3 example: standard_charge_information[0]
{
  "description": "MRI of brain (no contrast)",
  "code_information": [
    { "code": "611", "type": "RC" },
    { "code": "70551", "type": "CPT" }
  ],
  "standard_charges": [{
    "setting": "outpatient",
    "minimum": 250,
    "maximum": 400,
    "gross_charge": 1200,
    "discounted_cash": 1080,
    "payers_information": [
      {
        "payer_name": "Platform Health Insurance",
        "plan_name": "PPO",
        "methodology": "fee schedule",
        "standard_charge_dollar": 400
      },
      {
        "payer_name": "Region Health Insurance",
        "plan_name": "HMO",
        "methodology": "fee schedule",
        "standard_charge_dollar": 250
      }
    ]
  }]
}
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  • Gross, discounted cash, payer-specific and de-identified min / max charges
  • cms-hpt.txt file and homepage footer link
  • Refreshed when your contracts change
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Your chargemaster sets the gross charge on every claim, and many payer contracts base payment on it through percent-of-charge, lesser-of and stop-loss terms. We audit it line by line and show how your charges and negotiated rates compare with peer hospitals before your next negotiation.

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CodingPricingPayer contractsCompliance
  • CPT, HCPCS, revenue code and modifier errors flagged line by line
  • Missing, duplicate and outdated charge lines identified
  • Charges set below payer allowables caught before lesser-of clauses cut payment
  • Revenue impact of charge changes modeled across percent-of-charge and stop-loss terms
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