William Griffin, MD
NPI 1336646892 · Internal Medicine Physician · Opelika, AL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Griffin, MD is a Internal Medicine Physician provider in Opelika, AL (NPI 1336646892).
Provider details
- NPI number
- 1336646892
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,375 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,054 | $114 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 630 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 231 | $114 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 110 | $12 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 79 | $79 |
| X-Ray of Chest, 2 Views |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 162 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 499 | 157 |
| Omeprazole | 379 | 115 |
| Amlodipine Besylate | 373 | 115 |
| Losartan Potassium | 331 | 99 |
| Levothyroxine Sodium | 326 | 103 |
| Rosuvastatin Calcium | 326 | 104 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$475 across 26 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-11
- Last updated
- 2021-09-20
- Certified
- 2021-09-20
Frequently asked questions
- What is William Griffin's NPI number?
- William Griffin's National Provider Identifier (NPI) is 1336646892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Griffin's specialty?
- William Griffin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Griffin located?
- William Griffin's practice location on file with NPPES is 121 N 20th St Ste 6, Opelika, AL 36801-5454.
- What is William Griffin's phone number?
- The practice phone number listed in the NPPES registry for William Griffin is (334) 749-3385.
- Does William Griffin accept Medicare?
- William Griffin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Griffin's NPI active?
- Yes — William Griffin's NPI (1336646892) is active in the NPPES registry as of the last update on 2021-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.