Gerald Muthu, M.D,
NPI 1275500902 · Internal Medicine Physician · Casa Grande, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerald Muthu, M.D, is a Internal Medicine Physician provider in Casa Grande, AZ (NPI 1275500902).
Provider details
- NPI number
- 1275500902
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D,
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25612 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
9,387 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 3,687 | $124 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 2,172 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 2,067 | $88 |
| Administration of Influenza Virus VaccineG0008 | 289 | $31 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 222 | $14 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 186 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,332 | 487 |
| Levothyroxine Sodium | 727 | 250 |
| Losartan Potassium | 683 | 259 |
| Amlodipine Besylate | 642 | 234 |
| Lisinopril | 529 | 212 |
| Tamsulosin Hcl | 413 | 148 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-01
- Last updated
- 2015-02-15
Frequently asked questions
- What is Gerald Muthu's NPI number?
- Gerald Muthu's National Provider Identifier (NPI) is 1275500902, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Muthu's specialty?
- Gerald Muthu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald Muthu located?
- Gerald Muthu's practice location on file with NPPES is 1653 E Mcmurray Blvd Ste 132, Casa Grande, AZ 85122-5934.
- What is Gerald Muthu's phone number?
- The practice phone number listed in the NPPES registry for Gerald Muthu is (520) 876-0478.
- Does Gerald Muthu accept Medicare?
- Gerald Muthu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerald Muthu's NPI active?
- Yes — Gerald Muthu's NPI (1275500902) is active in the NPPES registry as of the last update on 2015-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.