Duncan Aesctun Friedman, M.D.

Primary specialty

Retina Specialist (Ophthalmology) PhysicianTaxonomy code 207WX0107X

License

P5275 Issued in TX

Practice address

622 Isom Rd
San Antonio, TX 78216-4464

Phone

(210) 880-3000

Fax

(210) 227-6056

NPI assigned

Jun 19, 2008

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in AL, TX2 enrollments

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 2

Specialty

Ophthalmology

Education

Louisiana State University School of Medicine in New Orleans, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Baptist Medical Center Hospital, San Antonio, TX, CCN 450058

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as individual

Quality

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dfriedman@bravermanterry.intellechartdirect.net
• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

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

• Duncan a Friedman MD PA

  • Retina Specialist (Ophthalmology) Physician
  • San Antonio, TX
  • NPI 1306348032
  Medicare reassignment NPD Authorized official
• Thomas Omar Oei MD PA

  • Ophthalmology Physician
  • San Antonio, TX
  • NPI 1447225388
  Medicare reassignment NPD
• Uab Callahan Eye Hospital Authority

  dba Anesthesia at Callahan Eye Hospital

  • Certified Registered Nurse Anesthetist
  • Birmingham, AL
  • NPI 1023358850
  Medicare reassignment NPD
• Retina Consultants of Alabama P.C.

  • Ophthalmology Physician
  • Birmingham, AL
  • NPI 1588610968
  Medicare reassignment
• Uab Callahan Eye Hospital Authority

  dba Callahan Eye Hospital

  • Ophthalmology Physician
  • Birmingham, AL
  • NPI 1427398254
  NPD

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

• VHS San Antonio Partners LLC

  dba Baptist Medical Center

  • General Acute Care Hospital
  • San Antonio, TX
  • NPI 1598744856
  Care Compare affiliation

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

{
    "created_epoch": "1213833600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777593600000",
    "number": "1457512725",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "622 ISOM RD",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782164464",
            "telephone_number": "210-880-3000",
            "fax_number": "210-227-6056"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "622 ISOM RD",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782164464",
            "telephone_number": "210-880-3000",
            "fax_number": "210-227-6056"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "931 E Main St",
            "address_purpose": "LOCATION",
            "city": "Uvalde",
            "state": "TX",
            "postal_code": "788014855",
            "country_code": "US",
            "telephone_number": "210-880-3000",
            "fax_number": "210-227-6056",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FRIEDMAN",
        "first_name": "DUNCAN",
        "middle_name": "AESCTUN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-06-19",
        "last_updated": "2026-05-01",
        "certification_date": "2026-05-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207WX0107X",
            "taxonomy_group": "",
            "desc": "Ophthalmology, Retina Specialist",
            "state": "TX",
            "license": "P5275",
            "primary": true
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "TX",
            "license": "P5275",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "dfriedman@bravermanterry.intellechartdirect.net",
            "affiliation": "N",
            "endpointDescription": "Dr. Friedman EMR email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1100 N Main Ave",
            "city": "San Antonio",
            "state": "TX",
            "country_code": "US",
            "postal_code": "782124712",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Calleen Mary Friedel, M.S.L.M.F.T.C.E.A.P.
• Oscar Hernan Friedel, PT
• Alyona Viktorovna Friedman, LMSW
• Carly Friedman, PHD, MA, LPC
• David J Friedman, MD
• Lisa Amy Friedman, RN, MSN, CPNP
• William J. Friedrich, DO
• Paul Friedrichs, RPH
• Warren Friedrichs, MD
• Francis Edmund Friedrick, LPC

• Retina Specialist (Ophthalmology) Physician in San Antonio, TX
• Providers in San Antonio, TX by specialty
• Retina Specialist (Ophthalmology) Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 1, 2026; 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.