Runi Chattopadhyay, MD
Surgery Physician · Palo Alto, CA
Runi Chattopadhyay, MD is a surgery physician with a practice address in Palo Alto, California, and NPI 1821055336, issued on Apr 27, 2006. Check the license (California A91895, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Runi Chattopadhyay
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A91895 CA
Self-reported in NPPES; status is on the state search - Practice location
- 795 EL Camino Real, Palo Alto, CA 94301
- Phone
- (650) 853-2946
- Enumerated
- Apr 27, 2006
- Record last updated
- Jul 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (650) 853-6053
- Medicaid ID
- 0A9189500 CA
- Medicare enrollment
- Enrolled (PECOS I20051018001252); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 795 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hamza AbbasiInternal Medicine Physician1821545484
- Arman Abdalkhani, MDOtolaryngology Physician1356536130
- Sara AbrahamsInternal Medicine Physician1952988354
- Nana Efua Adabie, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1437647732
- Amy Adams, M.D.Dermatology Physician1679643928
- William Adams, DPMFoot & Ankle Surgery Podiatrist1447487830
Verify Runi Chattopadhyay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91895Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average surgery physician in 2024
42 Medicare Part D claims for 34 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 27 claims were for opioids.
Most prescribed
- Acetaminophen-Codeine27 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Runi Chattopadhyay among 3,118 surgery physician records in California
Runi Chattopadhyay, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1996 · median 2003 among the 1,901 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Palo Alto → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Haroon AnwarPalo Alto, CA 943011700991924
- Christine Ching, M DPalo Alto, CA 943011790994572
- Beemen Khalil, MDPalo Alto, CA 943011427296110
- Shelley Marks, MDPalo Alto, CA 943011043325285
- Francis Marzoni, M.D.Palo Alto, CA 943011316003569
- Nalini Raju, MD MPHPalo Alto, CA 943011609963461
- James Badger, M.D.Palo Alto, CA 943041255360863
- Mary Hawn, MDPalo Alto, CA 943041194751271
Common questions
What is Runi Chattopadhyay, MD's NPI number?
Runi Chattopadhyay, MD's National Provider Identifier (NPI) is 1821055336, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Runi Chattopadhyay, MD located?
The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 853-2946. Providers update this record themselves, so call before visiting.
How can I verify Runi Chattopadhyay, MD's license?
NPPES lists California license number A91895, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Runi Chattopadhyay, MD prescribe under Medicare Part D?
In 2024, Runi Chattopadhyay, MD had 42 Medicare Part D claims for 34 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.