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DR. THOMAS B HARGRAVE III MD
NPI 1023076692
Internal Medicine - Gastroenterology in Oakland, CA

Active since May 03, 2006PECOS Enrolled
300 FRANK OGAWA PLAZA, SUITE 450, OAKLAND, CA 94612(510) 444-3297(510) 444-6421 Get Directions Write a Review

NPPES record last updated: May 6, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Thomas B Hargrave Iii Md NPPES

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

DR. THOMAS B HARGRAVE III MD (NPI 1023076692) is an individual gastroenterology provider in Oakland, California, licensed in California (G44506) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1023076692
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. THOMAS B HARGRAVE IIICredential: MD
Location Address300 FRANK OGAWA PLAZA, SUITE 450Oakland, CA 94612
Mailing Address300 Frank Ogawa Plaza, Suite 450Oakland, CA 94612 · (510) 444-3297 · Fax (510) 444-6421
Phone(510) 444-3297
Fax(510) 444-6421
Sole ProprietorNo
Enumeration DateMay 3, 2006
Last NPPES UpdateMay 6, 2013
✔ NPI 1023076692 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · G44506
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
300 FRANK OGAWA PLAZA, Oakland, CA 94612
Open in Google Maps ↗

Other Identifiers 3

Medicare ID-Type UnspecifiedZZZ23860ZCA
Medicare UPINA49670
Medicare PIN00G445063CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas B Hargrave Iii 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 Thomas Hargrave reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Contra Costa County
11 mi
Family Planning, Non-Surgical
13601 SAN PABLO AVE
San Pablo, CA 94806
  • Reassigned Medicare billing, California enrollment
  • 530 clinicians in this Medicare group
NPI 1417036484 (925) 957-5429

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94612 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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 3

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

OAKLAND CA ENDOSCOPY ASC LP
Clinic/Center (Ambulatory Surgical)
300 FRANK OGAWA PLAZA, SUITE 135
OAKLAND, CA 94612
Alameda County (510) 893-1600
EAST BAY ENDOSURGERY CENTER INC
Clinic/Center (Ambulatory Surgical)
300 FRANK OGAWA PLAZA, SUITE 135
OAKLAND, CA 94612
Alameda County (510) 893-1600
AMSURG OAKLAND ANESTHESIA LP
Anesthesiology
300 FRANK OGAWA PLAZA, SUITE 135
OAKLAND, CA 94612
Alameda County (510) 893-1600

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 Thomas Hargrave's NPI number?

The NPI number for Thomas Hargrave is 1023076692. It was assigned to this individual provider in the NPPES registry on May 3, 2006.

Where is Thomas Hargrave located?

Thomas Hargrave practices at 300 Frank Ogawa Plaza Suite 450, Oakland, CA 94612. The listed phone number is (510) 444-3297.

What is Thomas Hargrave's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Thomas Hargrave enrolled in Medicare?

Yes. Thomas Hargrave is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Hargrave's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Hargrave reassigns Medicare benefits to Contra Costa County (San Pablo, 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 Thomas Hargrave'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 Thomas Hargrave was last updated on May 6, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.