Walter Anazonwu, MD
NPI 1316511223 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Anazonwu, MD is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1316511223).
Provider details
- NPI number
- 1316511223
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2019034757 (MO)
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
5 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 23 | — |
| Atorvastatin Calcium | 22 | 12 |
| Amlodipine Besylate | 21 | — |
| Losartan Potassium | 20 | — |
| Fluticasone Propionate | 12 | — |
| Gabapentin | 11 | — |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-05-15
- Last updated
- 2021-05-15
- Certified
- 2021-05-15
Frequently asked questions
- What is Walter Anazonwu's NPI number?
- Walter Anazonwu's National Provider Identifier (NPI) is 1316511223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Anazonwu's specialty?
- Walter Anazonwu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Anazonwu located?
- Walter Anazonwu's practice location on file with NPPES is 916 Olive St, Saint Louis, MO 63101-1400.
- What is Walter Anazonwu's phone number?
- The practice phone number listed in the NPPES registry for Walter Anazonwu is (314) 436-9300.
- Does Walter Anazonwu accept Medicare?
- Walter Anazonwu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Anazonwu's NPI active?
- Yes — Walter Anazonwu's NPI (1316511223) is active in the NPPES registry as of the last update on 2021-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.