John F Warren, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

223233 Issued in MA

Practice address

33 Riddell St
Greenfield, MA 01301

Phone

(413) 774-7016

Fax

(413) 773-7596

NPI assigned

Oct 28, 2005

Last updated

Mar 7, 2023By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Ophthalmology

Education

Stanford University School of Medicine, 1997

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Longwood Eye LLCGroup PAC ID 0143632802, 16 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Baystate Franklin Medical Center Hospital, Greenfield, MA, CCN 220016

Merit-based Incentive Payment System (MIPS)

Final score

94.01 of 100Reported as group

Quality

92.29

Improvement activities

40

Cost

73.65

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Longwood Eye, LLC

  • Ophthalmology Physician
  • West Springfield, MA
  • NPI 1649875964
  Medicare reassignment Care Compare group NPD
• Franklin Eye Care

  dba Greenfield Eye Center

  • Ophthalmology Physician
  • Greenfield, MA
  • NPI 1235303488
  NPD
• Eye Center Optical, Inc.

  dba Eco

  • Optician
  • Holyoke, MA
  • NPI 1275061335
  NPD (past)

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

• Baystate Franklin Medical Center

  • General Acute Care Hospital
  • Greenfield, MA
  • NPI 1508867391
  Care Compare affiliation

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

{
    "created_epoch": "1130457600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1678147200000",
    "number": "1386634400",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "33 RIDDELL ST",
            "city": "GREENFIELD",
            "state": "MA",
            "postal_code": "01301",
            "telephone_number": "413-774-7016",
            "fax_number": "413-773-7596"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "33 RIDDELL ST",
            "city": "GREENFIELD",
            "state": "MA",
            "postal_code": "01301",
            "telephone_number": "413-774-7016",
            "fax_number": "413-773-7596"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARREN",
        "first_name": "JOHN",
        "middle_name": "F",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-28",
        "last_updated": "2023-03-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "MA",
            "license": "223233",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alicia R. Walter, R.D., L.D.N.
• Sandi S Walters, MSW LICSW
• Karin Walz
• Sarah Marie Ward
• Marie J Wargo, PSY.D., LMHC
• Joshua Warren, MAOM
• Heba S Wassif, MD
• Philip J Watts, BA
• Samuel Weaver, PHARMD
• Deauna Venise Webb, PSY.D

• Ophthalmology Physician in Greenfield, MA
• Providers in Greenfield, MA by specialty
• Ophthalmology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 7, 2023; 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.