Matthew Gerard Retzloff, M.D.

Primary specialty

Reproductive Endocrinology PhysicianTaxonomy code 207VE0102X

License

J8736 Issued in TX

Practice address

7707 Ewing Halsell, Suite 103
San Antonio, TX 78229-4040

Phone

(210) 692-0577

Fax

(210) 692-1210

NPI assigned

Nov 2, 2005

Last updated

Sep 25, 2026By 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 3

Addresses

Medicare fee-for-service enrollment

Enrolled in SD

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

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.

• Sanford Medical Center

  dba Edith Sanford Breast Specialty Clinic

  • Family Medicine Physician
  • Sioux Falls, SD
  • NPI 1093090342

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Joseph E Martin MD PA

  • Reproductive Endocrinology Physician
  • San Antonio, TX
  • NPI 1184819799
  NPD
• Sanford Medical Center

  dba Sanford Clinic Lake Norden

  • Rural Health Clinic/Center
  • Lake Norden, SD
  • NPI 1417927559
  NPD
• Independent Physicians Network PLLC

  • Anesthesiology Physician
  • Dallas, TX
  • NPI 1396274676
  NPD (past)
• Carney Medical Group

  • Specialist
  • Brighton, MA
  • NPI 1326142704
  NPD (past)

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

{
    "created_epoch": "1130889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790294400000",
    "number": "1659362218",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7707 EWING HALSELL DR STE 103",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782294040",
            "telephone_number": "210-692-0577",
            "fax_number": "210-692-1210"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7707 EWING HALSELL, SUITE 103",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782294040",
            "telephone_number": "210-692-0577",
            "fax_number": "210-692-1210"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RETZLOFF",
        "first_name": "MATTHEW",
        "middle_name": "GERARD",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-02",
        "last_updated": "2026-09-25",
        "certification_date": "2026-09-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "TX",
            "license": "J8736",
            "primary": false
        },
        {
            "code": "207VE0102X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Reproductive Endocrinology",
            "state": "ND",
            "license": "24888",
            "primary": false
        },
        {
            "code": "207VE0102X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Reproductive Endocrinology",
            "state": "TX",
            "license": "J8736",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Retinal Consultants of San Antonio
• Jesse J. Rettele, L/CPO
• Shaylon Dwayne Rettig, M.D.
• Veronica Rettig, MSNA
• Jennifer Suzanne Retzloff, M.D.
• Aliese Marie Reus, PHARMD
• Madison Grace Reuther, COTA
• Kelly Reveles
• Ashlyn Rose Revere, MA
• Edmundo Reveron-Questell, MD MPH

• Reproductive Endocrinology Physician in San Antonio, TX
• Providers in San Antonio, TX by specialty
• Reproductive Endocrinology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 25, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.