SIRISHA KRISHNA TUMMALA MD
NPI 1851755151
Internal Medicine - Hematology & Oncology in San Mateo, CA
About Sirisha Krishna Tummala Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIRISHA KRISHNA TUMMALA MD (NPI 1851755151) is an individual hematology & oncology provider in San Mateo, California, licensed in California (A162966) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Sirisha Krishna Tummala Md 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 Sirisha Tummala reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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 94402 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN MATEO, CA 94402
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 Sirisha Tummala's NPI number?
The NPI number for Sirisha Tummala is 1851755151. It was assigned to this individual provider in the NPPES registry on April 12, 2016.
Where is Sirisha Tummala located?
Sirisha Tummala practices at 218 De Anza Blvd, San Mateo, CA 94402. The listed phone number is (650) 341-9131.
What is Sirisha Tummala's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Sirisha Tummala enrolled in Medicare?
Yes. Sirisha Tummala 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 Sirisha Tummala's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sirisha Tummala reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Sirisha Tummala'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 Sirisha Tummala was last updated on June 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Sirisha Krishna Tummala, MD · NPI 1851755151
Hematology & Oncology physician in San Mateo, California. Individual provider, active in the CMS NPPES registry since April 12, 2016.
## Identity
- **NPI:** 1851755151 (Entity type: Individual)
- **Enumerated:** April 12, 2016
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A162966 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 218 DE ANZA BLVD, San Mateo, CA 94402-3913
- **Phone:** (650) 341-9131
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1376613943, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** June 20, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1851755151) · Data from the CMS NPPES public registry.