John Griffin, DO
NPI 1235628033 · Internal Medicine Physician · Mesa, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Griffin, DO is a Internal Medicine Physician provider in Mesa, AZ (NPI 1235628033).
Provider details
- NPI number
- 1235628033
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- 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 tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,463 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 867 | $112 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 280 | $109 |
| Advance Care Planning, First 30 Minutes99497 | 176 | $72 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 140 | $165 |
Typical Medicare-allowed amounts for these services range $72–$165 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 95 | 51 |
| Apixabanbrand: Eliquis | 67 | 35 |
| Metoprolol Tartrate | 49 | 34 |
| Furosemide | 48 | 27 |
| Pantoprazole Sodium | 47 | 25 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 47 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-05-07
- Last updated
- 2022-02-18
- Certified
- 2022-02-18
Frequently asked questions
- What is John Griffin's NPI number?
- John Griffin's National Provider Identifier (NPI) is 1235628033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Griffin's specialty?
- John Griffin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Griffin located?
- John Griffin's practice location on file with NPPES is 1301 S Crismon Rd, Mesa, AZ 85209-3767.
- What is John Griffin's phone number?
- The practice phone number listed in the NPPES registry for John Griffin is (480) 373-2370.
- Does John Griffin accept Medicare?
- John Griffin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Griffin's NPI active?
- Yes — John Griffin's NPI (1235628033) is active in the NPPES registry as of the last update on 2022-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.