Steven Charles Balser, M.D.

Primary specialty

Emergency Medical Services (Emergency Medicine) PhysicianTaxonomy code 207PE0004X

License

72046 Issued in MA

Practice address

200 Groton Rd
Ayer, MA 01432-1168

Phone

(978) 784-9000

NPI assigned

Nov 1, 2006

Last updated

Apr 22, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Emergency MedicineAlso: Internal Medicine

Education

Other, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr IncGroup PAC ID 4486567104, shared by 12 NPIs, 1,693 clinicians

Beth Israel Deaconess Medical Center IncGroup PAC ID 8123936119, 136 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mount Auburn Hospital Hospital, Cambridge, MA, CCN 220002
• Beth Israel Deaconess Medical Center Hospital, Boston, MA, CCN 220086

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sbalser254902@direct.bilh.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Beth Israel Deaconess Medical Center, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1548202641
  Medicare reassignment Care Compare group NPD
• Associated Physicians of Harvard Medical Faculty Physicians at Beth Is

  dba APHMFP-Emergency Medicine

  • Emergency Medical Services (Emergency Medicine) Physician
  • Boston, MA
  • NPI 1952358533
  Medicare reassignment NPD
• Bid-Milton Physician Associates Inc

  dba Beth Israel Lahey Health Urgent Care

  • Urgent Care Clinic/Center
  • Quincy, MA
  • NPI 1164060778
  Medicare reassignment NPD
• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1194765438
  Medicare reassignment NPD
• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  dba Emergency Medicine - HMFP at BIDMC

  • Emergency Medicine Physician
  • Boston, MA
  • NPI 1316987993
  Medicare reassignment NPD
• Steward Emergency Physicians, Inc

  • Emergency Medicine Physician
  • Ayer, MA
  • NPI 1780971275
  Medicare reassignment NPD
• Associated Physicians of Harvard Medical Faculty Physicians at Beth Is

  dba Associated Physicians of HMFP

  • Multi-Specialty Clinic/Center
  • Boston, MA
  • NPI 1861216038
  NPD
• Beth Israel Deaconess Medical Center, Inc.

  • Ambulance
  • Boston, MA
  • NPI 1518600501
  NPD
• Bid-Milton Physician Associates Inc

  • Multi-Specialty Clinic/Center
  • Quincy, MA
  • NPI 1710862420
  NPD
• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  dba HMFP - Urgent Care

  • Urgent Care Clinic/Center
  • Dedham, MA
  • NPI 1538774443
  NPD
• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  dba Dermatology - HMFP at BIDMC

  • Dermatology Physician
  • Boston, MA
  • NPI 1043250616
  NPD (past)
• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  dba HMFP - Surgery

  • Surgery Physician
  • Boston, MA
  • NPI 1720037385
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Beth Israel Deaconess Medical Center, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1548202641
  Care Compare affiliation
• Mount Auburn Hospital

  • General Acute Care Hospital
  • Cambridge, MA
  • NPI 1689670259
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1162339200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745280000000",
    "number": "1750468393",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "39 VICTORIA RD",
            "city": "SUDBURY",
            "state": "MA",
            "postal_code": "017763139"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 GROTON RD",
            "city": "AYER",
            "state": "MA",
            "postal_code": "014321168",
            "telephone_number": "978-784-9000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BALSER",
        "first_name": "STEVEN",
        "middle_name": "CHARLES",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-11-01",
        "last_updated": "2025-04-22",
        "certification_date": "2025-04-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207PE0004X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Emergency Medical Services",
            "state": "MA",
            "license": "72046",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ayer Shirley Regional School District
• Ayer Valley Operating LLC
• Ayer Valley Rehab and Nursing LLC
• Dawn Baird, PA-C
• Mary L Bakalos, M.D.
• Behavioral Milestones
• Marie G Bennett, FNP-BC
• Elisha S Bernstein, LICSW
• Desdalin Cornelia Black, M.S.ED., BCBA
• Colin Blake, MD

• Emergency Medical Services (Emergency Medicine) Physician in Ayer, MA
• Providers in Ayer, MA by specialty
• Emergency Medical Services (Emergency Medicine) Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 22, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.