Gerald Muthu, M.D,
Internal Medicine Physician · Casa Grande, AZ
Gerald Muthu, M.D, is an internal medicine physician with a practice address in Casa Grande, Arizona, and NPI 1275500902, issued on Mar 1, 2006. Check the license (Arizona 25612, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gerald Muthu
- Credential
- M.D,
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25612 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1653 E Mcmurray Blvd Ste 132, Casa Grande, AZ 85122
- Phone
- (520) 876-0478
- Enumerated
- Mar 1, 2006
- Record last updated
- Feb 15, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (520) 876-0484
- Medicare enrollment
- Enrolled (PECOS I20050216000329); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1653 E Mcmurray Blvd Ste 132
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Glickman, FNP-CFamily Nurse Practitioner1720605462
- Aditya Muthu, NPNurse Practitioner1710879598
- Jennifer Nies, FNP-BCFamily Nurse Practitioner1124742614
Verify Gerald Muthu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 25612Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average internal medicine physician in 2024
16,208 Medicare Part D claims for 1,537 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 320 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,332 claims
- Levothyroxine Sodium727 claims
- Losartan Potassium683 claims
- Amlodipine Besylate642 claims
- Lisinopril529 claims
- Tamsulosin Hcl413 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Gerald Muthu, LLCCasa Grande, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
14 internal medicine physician records list a practice address in Casa Grande
They are 14 of the 867 NPPES records with a practice address in Casa Grande, and 2,853 internal medicine physician records in Arizona.
All 14 in Casa Grande → All 2,853 in Arizona → Every provider in Casa Grande →
Other internal medicine physician records in Arizona
- Daniel Aaronson, MDTucson, AZ1134865355
- Constantia Abarikwu, MDPhoenix, AZ1497832620
- Jaber Abawi, MDPayson, AZ1629038542
- Demsas Abay, MDPeoria, AZ1720312390
- Firas Abbas, M.D. M.P.H.Mesa, AZ1336481407
- Hassan Abbas, D.O.Mesa, AZ1477294775
- Jalal Abbas, M.D.Sun City West, AZ1205895034
- Tayeb Abbas, MDSun City West, AZ1093406795
- Hamed Abbaszadegan, MDPhoenix, AZ1407083579
- Kristopher Abbate, MDTucson, AZ1184112401
Common questions
What is Gerald Muthu, M.D,'s NPI number?
Gerald Muthu, M.D,'s National Provider Identifier (NPI) is 1275500902, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Muthu, M.D, located?
The NPPES record lists a practice address at 1653 E Mcmurray Blvd Ste 132, Casa Grande, AZ, 85122. Phone: (520) 876-0478. Providers update this record themselves, so call before visiting.
How can I verify Gerald Muthu, M.D,'s license?
NPPES lists Arizona license number 25612, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gerald Muthu, M.D, prescribe under Medicare Part D?
In 2024, Gerald Muthu, M.D, had 16,208 Medicare Part D claims for 1,537 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Gerald Muthu, M.D,'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.