DR. GERALD MUTHU M.D,
NPI 1275500902
Internal Medicine in Casa Grande, AZ

Q: What is Gerald Muthu's NPI number?

The NPI number for Gerald Muthu is 1275500902. It was assigned to this individual provider in the NPPES registry on March 1, 2006.

Q: What is Gerald Muthu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Gerald Muthu was last updated on February 15, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since March 01, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 03D0895592 · Waiver

75/100

CMS Quality Rating

1653 E MCMURRAY BLVD STE 132, CASA GRANDE, AZ 85122(520) 876-0478(520) 876-0484 Get Directions Write a Review

NPPES record last updated: February 15, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Gerald Muthu M.d, NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GERALD MUTHU M.D, (NPI 1275500902) is an individual internal medicine provider in Casa Grande, Arizona, licensed in Arizona (25612) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through December 9, 2026, and is a graduate of Other (1988).

NPPES Registry Identity

NPI1275500902

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. GERALD MUTHUCredential: M.D,

Location Address1653 E MCMURRAY BLVD STE 132Casa Grande, AZ 85122-5934

Mailing Address1653 E Mcmurray Blvd Ste 132Casa Grande, AZ 85122-5934 · (520) 876-0478 · Fax (520) 876-0484

Phone(520) 876-0478

Fax(520) 876-0484

Sole ProprietorYes

Medical School CMSOtherGraduated 1988

Enumeration DateMarch 1, 2006

Last NPPES UpdateFebruary 15, 2015

✔ NPI 1275500902 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in AZ · 25612

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1653 E MCMURRAY BLVD STE 132, Casa Grande, AZ 85122

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Other Identifiers 2

Medicare UPING64280AZ

Medicare UPINH48499AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Arizona, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gerald Muthu M.d, is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9335190891

PECOS Enrollment IDI20050216000329

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 03D0895592

Gerald Muthu LLC Dba Oasis Health Center · Casa Grande, AZ

Active · expires Dec 9, 2026

CLIA Number03D0895592

Laboratory TypePhysician Office

Certificate Effective DateDecember 10, 2024

Certificate Expiration DateDecember 9, 2026

Laboratory DirectorGerald Muthu, MD

Laboratory Phone(520) 876-0478

Laboratory LocationGerald Muthu LLC Dba Oasis Health Center1653 E Mcmurray Blvd, Ste 132, Casa Grande, AZ 85122

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 16

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

3,687 services1,090 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

2,172 services1,035 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

2,067 services828 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

289 services288 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

222 services204 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

174 services174 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

170 services49 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

168 services168 patients

Injection, ketorolac tromethamine, per 15 mg J1885

Ketorolac tromethamine is a medication administered through injection, often used to manage moderate to severe pain. Each 15 mg dose helps to reduce hormones causing inflammation and pain in the body. It is not recommended for long-term use.

160 services35 patients

Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous G0328

A fecal occult blood test is a screening tool for colorectal cancer. It checks for tiny amounts of blood in your stool that can't be seen with the naked eye. The immunoassay method can test 1-3 samples at once. This helps detect cancer early, when treatment is most effective.

89 services89 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

79 services79 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

77 services69 patients

Removal of impacted ear wax 69210

Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.

75 services58 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

58 services47 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

20 services20 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85122 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$127.71 typical visit price

range $55.44 – $168.60

Typical copayment $31.92 (range $13.86 – $42.15)

Most-billed visit code 99204

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Referred Medical Equipment & Supplies CMS DME claims 22

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

18 suppliers76 claims200 services$6.38 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

9 suppliers17 claims21 services$0.93 avg. paid by Medicare

Male external catheter, with or without adhesive, disposable, each A4349

DME-Medical/Surgical Supplies · category DA000N

1 supplier12 claims360 services$1.85 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

1 supplier12 claims24 services$9.34 avg. paid by Medicare

Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, 4 x 4 inches or smaller, each A4409

DME-Orthotic Devices · category DF010N

2 suppliers23 claims340 services$5.99 avg. paid by Medicare

Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), each A4425

DME-Orthotic Devices · category DF010N

3 suppliers18 claims360 services$3.46 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604