DR. MEGHA AMBATI
NPI 1083849111
Internal Medicine in Walnut Creek, CA
About Dr. Megha Ambati NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MEGHA AMBATI (NPI 1083849111) is an individual internal medicine provider in Walnut Creek, California, licensed in California (A125755) and active in the NPI registry since May 2009. She is enrolled in Medicare PECOS, is affiliated with Baylor University Medical Center, and maintains a secondary practice location in Concord.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Dr. Megha Ambati 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.
Medicare Billing Reassignments
3Medicare enrollment records show Megha Ambati reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 637 clinicians in this Medicare group
Fort Worth, TX 76107
- Reassigned Medicare billing, Texas enrollment
- 3,167 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.
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baylor University Medical Center
Acute Care Hospitals · Dallas, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94595 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Megha Ambati's NPI number?
The NPI number for Megha Ambati is 1083849111. It was assigned to this individual provider in the NPPES registry on May 19, 2009.
Where is Megha Ambati located?
Megha Ambati practices at 1220 Rossmoor Pkwy, Walnut Creek, CA 94595. The listed phone number is (925) 947-3312.
What is Megha Ambati's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Megha Ambati enrolled in Medicare?
Yes. Megha Ambati 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 Megha Ambati's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Megha Ambati reassigns Medicare benefits to 3 organizations: John Muir Trauma Physicians Billing Service (Walnut Creek, CA), University Of California Sfgh Medical Group (San Francisco, CA) and Healthtexas Provider Network (Fort Worth, TX). 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 Megha Ambati's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Megha Ambati accept?
Health plans from Blue Cross and Blue Shield of Texas list Megha Ambati 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.
Is Megha Ambati affiliated with any hospitals?
According to CMS data, Megha Ambati is affiliated with Baylor University Medical Center.
When was this NPI record last updated?
The NPPES record for Megha Ambati was last updated on April 18, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. Megha Ambati · NPI 1083849111
Internal Medicine physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since May 19, 2009.
## Identity
- **NPI:** 1083849111 (Entity type: Individual)
- **Enumerated:** May 19, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A125755 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1220 ROSSMOOR PKWY, Walnut Creek, CA 94595
- **Phone:** (925) 947-3312
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA); University Of California Sfgh Medical Group (NPI 1265407381, San Francisco, CA); Healthtexas Provider Network (NPI 1992429161, Fort Worth, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Drexel University College Of Medicine, class of 2009
## Record status
- **NPPES last updated:** April 18, 2019
- **Other identifiers:** Other P01395804 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1083849111) · Data from the CMS NPPES public registry.