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JAMES MITTELBERGER M.D.
NPI 1508876194
Internal Medicine - Geriatric Medicine in Oakland, CA

Active since August 08, 2006PECOS Enrolled
6155 GIRVIN DR, OAKLAND, CA 94611(510) 387-0585(510) 291-2970 Get Directions Write a Review

NPPES record last updated: November 10, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About James Mittelberger M.d. NPPES

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

JAMES MITTELBERGER M.D. (NPI 1508876194) is an individual geriatric medicine provider in Oakland, California, licensed in California (G58513) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1508876194
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameJAMES MITTELBERGERCredential: M.D.
Location Address6155 GIRVIN DROakland, CA 94611-2444
Mailing Address6155 Girvin DrOakland, CA 94611-2444 · (510) 387-0585 · Fax (510) 291-2970
Phone(510) 387-0585
Fax(510) 291-2970
Sole ProprietorYes
Enumeration DateAugust 8, 2006
Last NPPES UpdateNovember 10, 2010
✔ NPI 1508876194 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in CA · G58513
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
6155 GIRVIN DR, Oakland, CA 94611
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Other Identifiers 3

Medicaid00G585130CA
Medicare ID-Type Unspecified00G585130CA
Medicare UPINA90018

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

James Mittelberger M.d. 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 James Mittelberger reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

By The Bay Health
19 mi
Hospice Care, Community Based
17 E SIR FRANCIS DRAKE BLVD
Larkspur, CA 94939
  • Reassigned Medicare billing, California enrollment
  • 8 clinicians in this Medicare group
NPI 1255381547 (415) 927-2273

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 94611 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
$202.35 typical visit price
range $69.00 – $202.35
Typical copayment $50.58 (range $17.25 – $50.58)
Most-billed visit code 99205
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.

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 James Mittelberger's NPI number?

The NPI number for James Mittelberger is 1508876194. It was assigned to this individual provider in the NPPES registry on August 8, 2006.

Where is James Mittelberger located?

James Mittelberger practices at 6155 Girvin Dr, Oakland, CA 94611. The listed phone number is (510) 387-0585.

What is James Mittelberger's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is James Mittelberger enrolled in Medicare?

Yes. James Mittelberger is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for James Mittelberger's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Mittelberger reassigns Medicare benefits to By The Bay Health (Larkspur, 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 James Mittelberger'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 James Mittelberger was last updated on November 10, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.