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GARY WILLIAM TAMKIN MD
NPI 1205816113
Emergency Medicine in Oakland, CA

Active since January 18, 2006PECOS Enrolled
1411 EAST 31ST ST, OAKLAND, CA 94602(209) 342-2300(209) 524-4240 Get Directions Write a Review

NPPES record last updated: February 28, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Gary William Tamkin Md NPPES

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

GARY WILLIAM TAMKIN MD (NPI 1205816113) is an individual emergency medicine provider in Oakland, California, licensed in California (G78338) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1205816113
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameGARY WILLIAM TAMKINCredential: MD
Location Address1411 EAST 31ST STOakland, CA 94602-1018
Mailing Address4301 North Star WayModesto, CA 95356 · (209) 342-2300 · Fax (209) 524-4240
Phone(209) 342-2300
Fax(209) 524-4240
Sole ProprietorYes
Enumeration DateJanuary 18, 2006
Last NPPES UpdateFebruary 28, 2008
✔ NPI 1205816113 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · G78338
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1411 EAST 31ST ST, Oakland, CA 94602
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Other Identifiers 4

Medicare PIN00G783383CA
Medicaid00G783380CA
Medicare UPINF91177
Medicare PIN00G783386CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gary William Tamkin Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Gary Tamkin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

San Joaquin Emergency Medical Associates
102 mi
Emergency Medicine
333 MERCY AVE
Merced, CA 95340
  • Reassigned Medicare billing, California enrollment
  • 141 clinicians in this Medicare group
NPI 1588960413 (844) 474-4019

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
71 services69 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
70 services69 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
38 services38 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94602 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RACHEL FERN VELEK MD
Pediatrics
1411 EAST 31ST ST, OAKCARE MEDICAL GROUP
OAKLAND, CA 94602
Alameda County (510) 437-4323
DR. HANSEL LIM MD
Internal Medicine
1411 EAST 31ST ST, A2 WING
OAKLAND, CA 94602
Alameda County (510) 437-4800
MRS. LISA YVETTE BURTON-JACKSON LCSW
Social Worker (Clinical)
1411 EAST 31ST ST, ACMC HIGHLAND CAMPUS
OAKLAND, CA 94602
Alameda County (510) 437-4688
JUDITH WOFSY MD
Internal Medicine
1411 EAST 31ST ST, OAKCARE MEDICAL GROUP
OAKLAND, CA 94602
Alameda County (510) 437-4323
SIMON SABIR DO
Student in an Organized Health Care Education/Training Program
1411 EAST 31ST ST, A2 WING
OAKLAND, CA 94602
Alameda County (510) 437-4800
DANA LYNNE KELLY PA
Clinical Nurse Specialist (Emergency)
1411 EAST 31ST ST
OAKLAND, CA 94602
Alameda County (209) 342-2300
NADIA ABDO DO
Student in an Organized Health Care Education/Training Program
1411 EAST 31ST ST, 2ND FLR A2
OAKLAND, CA 94602
Alameda County (510) 437-4089
ANDREW CHARLES NOTHMANN MD
Emergency Medicine
1411 EAST 31ST ST
OAKLAND, CA 94602
Alameda County (209) 342-2300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gary Tamkin's NPI number?

The NPI number for Gary Tamkin is 1205816113. It was assigned to this individual provider in the NPPES registry on January 18, 2006.

Where is Gary Tamkin located?

Gary Tamkin practices at 1411 East 31st St, Oakland, CA 94602. The listed phone number is (209) 342-2300.

What is Gary Tamkin's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Gary Tamkin enrolled in Medicare?

Yes. Gary Tamkin is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gary Tamkin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Tamkin reassigns Medicare benefits to San Joaquin Emergency Medical Associates (Merced, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gary Tamkin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gary Tamkin was last updated on February 28, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.