Dr. Gerald Muthu, MD
- Medicare services, 2024
- 9,836
- Medicare patients, 2024
- 1,258
- Part D claims, 2024
- 16,208
- MIPS score, 2024
- 75
- Hospital affiliations
- 2
- Practice address
- 1667 E Monument Plaza Cir, Casa Grande, AZ 85122
- Practice phone
- Call (520) 876-0478
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gerald Muthu
Casa Grande, Arizona
Find Dr. Muthu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gerald Muthu is an internist in Casa Grande, Arizona
Dr. Muthu practices at Gerald Muthu in Casa Grande, Arizona.
Dr. Muthu's NPI, 1275500902, was assigned on March 1, 2006. Dr. Muthu holds Arizona license 25612.
- NPI
- 1275500902NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335190891
- NPI enumeration date
- March 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (520) 876-0478
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gerald Muthu practices at Gerald Muthu in Casa Grande, Arizona
Dr. Muthu's primary practice is Gerald Muthu, at 1667 E Monument Plaza Cir, Casa Grande, AZ 85122 in Pinal County. The practice phone is (520) 876-0478.
- Gerald Muthu1667 E Monument Plaza Cir, Casa Grande, AZ 85122 · Pinal CountyPhone(520) 876-0478
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gerald Muthu is affiliated with 9 sites of care and 1 medical group
Dr. Muthu's primary practice is Gerald Muthu in Casa Grande, Arizona. Dr. Muthu is also affiliated with Banner Casa Grande Medical Center. The medical group on file is Oasis Health Center. Dmand AI also links Dr. Muthu to 1 more hospital, 5 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gerald Muthu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Muthu practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gerald Muthu | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gerald Muthu is one of 2,420 internists in Arizona
Internal medicine is Dr. Muthu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Muthu is licensed in Arizona.
Specialties and state licenses
- Internal medicine, ArizonaPrimary
Internists near Dr. Muthu
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gerald Muthu billed Medicare for 9,836 services in 2024
CMS data shows 9,836 Medicare services from Dr. Muthu across 18 procedure codes in 2024, for 1,258 Medicare patients. Medicare paid $516,480 for them. Every service was in an office.
Dr. Muthu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6,1592024: 5,9493%
- Surgery
- 2023: 2,3832024: 2,2476%
- Other services
- 2023: 7932024: 7417%
- Tests and treatments
- 2023: 1,1352024: 73935%
- Drugs given in the office
- 2023: 1542024: 1604%
Dr. Muthu compared with the Arizona median for internists, 2024
- Dr. Muthu
- Arizona median
- Medicare services
- 9,836vs 47620.7 times
- Medicare patients
- 1,258vs 2056.1 times
- Part D claims
- 15,447vs 26059.4 times
Medians across 2,300 internists in Arizona with Dmand AI profiles that report each measure.
Dr. Muthu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Muthu and other internists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gerald Muthu treated 1,258 Medicare patients in 2024, average age 77
CMS counts 1,258 Medicare patients who saw Dr. Muthu in 2024. The largest group is 75 to 84, with 594 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Muthu's median patient age at 75, with 54% women.
Dr. Muthu's Medicare patients by age, 2024
Dr. Muthu's Medicare patients by sex, 2024
- Women68354%
- Men57546%
Chronic conditions among Dr. Muthu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Diabetes31%
- Tobacco use29%
- Ischemic heart disease25%
- Chronic kidney disease20%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Muthu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gerald Muthu wrote 16,208 Medicare Part D claims in 2024
In 2024, Dr. Muthu wrote 16,208 Medicare Part D claims for 1,537 patients. 83% of them were for generic drugs. CMS names the drug for 15,447 of them, across 186 drugs with 11 or more claims each, at $1,937,891 in total drug cost. In 2023, CMS named 14,333 claims across 174 drugs.
Dr. Muthu's Part D claims by kind of drug, 2024
- Generic13,425 claims83%
- Brand-name2,586 claims16%
- Other197 claims1%
Dr. Muthu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Muthu's Part D claims, 2024
- Opioids2%320 of 16,208 claims
- Antibiotics2%347 of 16,208 claims
- Antipsychotics, patients 65 and over0%35 of 16,208 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 14,3332024: 15,4478%
Drugs named by CMS: 186 in 2024, 174 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gerald Muthu scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Muthu for performance year 2024, reported individually. Dr. Muthu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Muthu as offering telehealth. CMS counts 11 procedures of removal of tissue by Dr. Muthu, more than 62% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Muthu ranks in Medicare procedure volume
- Removal of tissue
- 62nd percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gerald Muthu received $792 in industry payments from 2016 to 2025
CMS Open Payments shows 10 general payments to Dr. Muthu from 6 drug and device companies from 2016 to 2025. Debt forgiveness make up the largest share, 64% of the total. Baxter Healthcare paid the most, $505.
General payments to Dr. Muthu by program year, 2016 to 2025
General payments to Dr. Muthu by kind, 2016 to 2025
- Debt forgiveness$50564%
- Food and beverage$24531%
- Education$425%
Companies that paid Dr. Muthu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gerald Muthu's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gerald Muthu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gerald Muthu's NPI number?
Dr. Gerald Muthu's NPI number is 1275500902. It was assigned on March 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gerald Muthu?
Dr. Gerald Muthu is an internist in Casa Grande, Arizona. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gerald Muthu practice?
Dr. Muthu practices at 1667 E Monument Plaza Cir, Casa Grande, AZ 85122. Dr. Muthu's primary practice is Gerald Muthu in Casa Grande, Arizona. Dmand AI also links Dr. Muthu to 1 hospital, 5 home health agencies and 1 group practice or clinic.
What is Dr. Gerald Muthu's office phone number?
The practice phone on file for Dr. Muthu is (520) 876-0478.
What is Dr. Gerald Muthu's medical license number?
Dr. Muthu holds Arizona license 25612.
Which hospitals is Dr. Gerald Muthu affiliated with?
Dr. Muthu is affiliated with Banner Casa Grande Medical Center. Dmand AI links Dr. Muthu to 1 more hospital.
What medical group is Dr. Gerald Muthu part of?
Dr. Muthu is linked to Oasis Health Center.
Does Dr. Gerald Muthu accept Medicare?
Yes. CMS data shows Dr. Muthu billed Medicare for 9,836 services in 2024, and Dr. Muthu accepts Medicare assignment.
Does Dr. Gerald Muthu offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Muthu as offering telehealth services.
What is Dr. Gerald Muthu's MIPS score?
Dr. Muthu's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
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How many Medicare patients does Dr. Gerald Muthu see?
CMS counts 1,258 Medicare patients who saw Dr. Muthu in 2024, with an average age of 77.
What services does Dr. Gerald Muthu bill to Medicare?
In 2024, Dr. Muthu's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and office visit, established patient (99213).
What drugs does Dr. Gerald Muthu prescribe most?
In 2024 Medicare Part D data, Dr. Muthu's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Losartan Potassium.
Has Dr. Gerald Muthu received payments from drug or device companies?
CMS Open Payments shows $792 in general payments to Dr. Muthu from 6 companies from 2016 to 2025. The largest total came from Baxter Healthcare.
How long has Dr. Gerald Muthu been practicing?
Dr. Muthu graduated from medical school in 1988, 38 years ago.
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