Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Pattabiraman B. Iyer, MD

Works at hospitals in Modesto, CA · Turlock, CA · Los Banos, CA … · California

Summary

Dr. Pattabiraman B. Iyer, MD is a family doctor at 581 4th Ave, Gustine, CA 95322. Phone: (209) 854-1120. Accepts Medicare assignment. In 2024, Pattabiraman B. Iyer had 556 Original Medicare patients and 16,670 services. NPI 1083616817. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Pattabiraman B. Iyer, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Pattabiraman B. Iyer accept Medicare assignment?
Yes. Medicare's clinician data says Pattabiraman B. Iyer accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Pattabiraman B. Iyer see?
In 2024, CMS data shows 556 Original Medicare patients and 16,670 services for Pattabiraman B. Iyer. This counts Original Medicare only and measures volume, not quality.
What is Pattabiraman B. Iyer's NPI number?
1083616817. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Pattabiraman B. Iyer, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients556
Services billed to Medicare16,670
Different services or procedures79
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)2,345 services
  2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,508 services
  3. Insertion of needle into vein for collection of blood sample (36415)1,489 services
  4. Injection, amikacin sulfate, 100 mg (J0278)1,287 services
  5. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)1,135 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Diabetes61%
  • Arthritis36%
  • Osteoporosis36%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)20%

Hospitals where Pattabiraman B. Iyer works

Medicare's Facility Affiliation Data lists Pattabiraman B. Iyer at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Doctors Medical CenterModesto, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050464
  • Emanuel Medical CenterTurlock, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050179
  • Memorial Hospital Los BanosLos Banos, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050528
  • Mercy Medical CenterMerced, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050444
  • St Joseph's Medical Center of StocktonStockton, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050084

Practice locations

Addresses where Pattabiraman B. Iyer is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Pattabiraman B. Iyer as a member of this group (CMS data updated October 2, 2026).

  • Jose a Garcia DO Medical Professional Corporation2 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All family doctors in California →

Other clinicians in Jose a Garcia DO Medical Professional Corporation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1975 (51 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1083616817
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians