Ursula Balthazar, M.D.

Primary specialty

Reproductive Endocrinology PhysicianTaxonomy code 207VE0102X

License

P8575 Issued in TX

Practice address

150 E Sonterra Blvd Ste 220
San Antonio, TX 78258-4185

Phone

(210) 337-8453

Fax

(210) 337-8452

NPI assigned

May 1, 2007

Sex

Female

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Aspire Fertility Institute Houston

  • Reproductive Endocrinology Physician
  • Houston, TX
  • NPI 1922480482
  NPD (past)
• Obhg Alaska, P.C.

  • Obstetrics & Gynecology Physician
  • Anchorage, AK
  • NPI 1740697069

  Single Specialty

  NPD (past)

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

{
    "created_epoch": "1177977600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752537600000",
    "number": "1669693370",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 632593",
            "city": "CINCINNATI",
            "state": "OH",
            "postal_code": "452632593",
            "telephone_number": "713-300-1123"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "150 E SONTERRA BLVD STE 220",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782584185",
            "telephone_number": "210-337-8453",
            "fax_number": "210-337-8452"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BALTHAZAR",
        "first_name": "URSULA",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-01",
        "last_updated": "2025-07-15",
        "certification_date": "2025-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207VE0102X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Obstetrics & Gynecology, Reproductive Endocrinology",
            "state": "TX",
            "license": "P8575",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jessica Lynn Balstad, CNM
• Cassandra Baltazar
• David Ramon Baltazar, FNP-C
• Nino Ramirez Baltazar, RN
• Jason Balter
• Christopher Baltimore
• Simon Balvin, D.P.M.
• Elizabeth Svyatoslavna Balyakina, MS, MPH, DO
• Jace Balzen, MD
• Niva Bamback, DO

• 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 Jul 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.