Susan Amber Cummings, MD
Gastroenterology Physician · Redwood City, CA
Susan Amber Cummings, MD is a gastroenterology physician with a practice address in Redwood City, California, and NPI 1619946514, issued on Mar 14, 2006. Check the license (California G47562, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Susan Amber Cummings
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G47562 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Whipple Ave Ste 245, Redwood City, CA 94062
- Phone
- (650) 365-3700
- Enumerated
- Mar 14, 2006
- Record last updated
- Jul 15, 2026
- Medicaid ID
- 00G475620 CA
- Medicare enrollment
- Enrolled (PECOS I20081216000153); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 2900 Whipple Ave Ste 245
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Madhuri BadrinathGastroenterology Physician1972030146
- Hoan Nguyen, PA-CMedical Physician Assistant1588378699
- James Torosis, M.D.Gastroenterology Physician1851477467
- Vicky Yang, M.D.Gastroenterology Physician1710063334
Verify Susan Amber Cummings in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G47562Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average gastroenterology physician in 2024
159 Medicare Part D claims for 35 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Vemlidy53 claims
- Pantoprazole Sodium15 claims
- Prilosec13 claims
- Dexlansoprazole Dr11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 80.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- County OF Santa ClaraSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan Amber Cummings among 2,140 gastroenterology physician records in California
Susan Amber Cummings, MD is one of 2,140 gastroenterology physician records with a practice address in California. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1979 · median 2002 among the 1,538 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Redwood City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Madhuri BadrinathRedwood City, CA 940621972030146
- Betty Ho, M.D.Redwood City, CA 940621134168750
- Cynthia Leung, MDRedwood City, CA 940621861570434
- James Torosis, M.D.Redwood City, CA 940621851477467
- Vicky Yang, M.D.Redwood City, CA 940621710063334
- Ming-Shing Chiu, MDRedwood City, CA 940631154409712
- Francis Chui, MDRedwood City, CA 940631033297684
- Henry Chun, MDRedwood City, CA 940631952489502
Common questions
What is Susan Amber Cummings, MD's NPI number?
Susan Amber Cummings, MD's National Provider Identifier (NPI) is 1619946514, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan Amber Cummings, MD located?
The NPPES record lists a practice address at 2900 Whipple Ave Ste 245, Redwood City, CA, 94062. Phone: (650) 365-3700. Providers update this record themselves, so call before visiting.
How can I verify Susan Amber Cummings, MD's license?
NPPES lists California license number G47562, 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 Susan Amber Cummings, MD prescribe under Medicare Part D?
In 2024, Susan Amber Cummings, MD had 159 Medicare Part D claims for 35 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Susan Amber Cummings, MD's MIPS final score?
The 2023 MIPS final score is 80.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.