TANAAZ B. BALDAWALA M.D.
NPI 1811075674
Internal Medicine - Gastroenterology in San Leandro, CA

Active since November 01, 2006PECOS EnrolledAccepts Medicare Assignment
2500 MERCED ST, SAN LEANDRO, CA 94577(510) 454-1000 Get Directions Write a Review

NPPES record last updated: December 6, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Tanaaz B. Baldawala M.d. NPPES

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

TANAAZ B. BALDAWALA M.D. (NPI 1811075674) is an individual gastroenterology provider in San Leandro, California, licensed in California (A53349) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1989).

NPPES Registry Identity

NPI1811075674
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameTANAAZ B. BALDAWALACredential: M.D.
Location Address2500 MERCED STSan Leandro, CA 94577-4201
Mailing Address2500 Merced StSan Leandro, CA 94577-4201 · (510) 454-1000
Sole ProprietorNo
Medical School CMSOtherGraduated 1989
Enumeration DateNovember 1, 2006
Last NPPES UpdateDecember 6, 2021
✔ NPI 1811075674 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 · A53349
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.
2500 MERCED ST, San Leandro, CA 94577

Other Identifiers 1

Medicaid00A533490CA

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tanaaz B. Baldawala 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 ID2365627148
PECOS Enrollment IDI20110420000447
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 Reassignments

2

Medicare enrollment records show Tanaaz Baldawala reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Internal Medicine
1190 VETERANS BLVD
Redwood City, CA 94063
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
General Practice
1450 TREAT BLVD, SUITE 300
Walnut Creek, CA 94597
  • Reassigned Medicare billing, California enrollment
  • 650 clinicians in this Medicare group

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 94577 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 20

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

Anesthesiology
2500 MERCED ST
SAN LEANDRO, CA 94577
Registered Nurse
2500 MERCED ST
SAN LEANDRO, CA 94577
Nurse Practitioner
2500 MERCED ST
SAN LEANDRO, CA 94577
Pharmacist
2500 MERCED ST
SAN LEANDRO, CA 94577
Radiology (Diagnostic Radiology)
2500 MERCED ST
SAN LEANDRO, CA 94577
Emergency Medicine
2500 MERCED ST
SAN LEANDRO, CA 94577
Advanced Practice Midwife
2500 MERCED ST
SAN LEANDRO, CA 94577
Emergency Medicine
2500 MERCED ST
SAN LEANDRO, CA 94577

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 Tanaaz Baldawala's NPI number?

The NPI number for Tanaaz Baldawala is 1811075674. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Tanaaz Baldawala located?

Tanaaz Baldawala practices at 2500 Merced St, San Leandro, CA 94577. The listed phone number is (510) 454-1000.

What is Tanaaz Baldawala's specialty?

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

Is Tanaaz Baldawala enrolled in Medicare?

Yes. Tanaaz Baldawala is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Tanaaz Baldawala's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tanaaz Baldawala reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Redwood City, CA) and John Muir Physician Network (Walnut Creek, CA). Each 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 Tanaaz Baldawala's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tanaaz Baldawala accept?

Health plans from Kaiser Permanente list Tanaaz Baldawala as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tanaaz Baldawala was last updated on December 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.