Richard Hannigan, MD
NPI 1801887047 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Hannigan, MD is a Internal Medicine Physician provider in San Antonio, TX (NPI 1801887047).
Provider details
- NPI number
- 1801887047
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G5145 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 23 | 23 |
| Pantoprazole Sodium | 18 | — |
| Amlodipine Besylate | 18 | — |
| Metoprolol Tartrate | 15 | — |
| Lisinopril | 13 | — |
| Cefdinir | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-04
- Last updated
- 2021-09-16
- Certified
- 2021-09-16
Frequently asked questions
- What is Richard Hannigan's NPI number?
- Richard Hannigan's National Provider Identifier (NPI) is 1801887047, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Hannigan's specialty?
- Richard Hannigan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Hannigan located?
- Richard Hannigan's practice location on file with NPPES is 12447 Network Blvd Ste 109, San Antonio, TX 78249-3540.
- What is Richard Hannigan's phone number?
- The practice phone number listed in the NPPES registry for Richard Hannigan is (210) 258-4625.
- Does Richard Hannigan accept Medicare?
- Richard Hannigan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Hannigan's NPI active?
- Yes — Richard Hannigan's NPI (1801887047) is active in the NPPES registry as of the last update on 2021-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.