Alyssa Gayle Caplan
Gastroenterology Physician · San Carlos, CA
Alyssa Gayle Caplan is a gastroenterology physician with a practice address in San Carlos, California, and NPI 1144781915, issued on Mar 26, 2019. Check the license (California A179987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alyssa Gayle Caplan
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A179987 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Laurel St, San Carlos, CA 94070
- Phone
- (650) 596-8800
- Enumerated
- Mar 26, 2019
- Record last updated
- Aug 15, 2025
- Fax
- (650) 596-8802
- Medicare enrollment
- Enrolled (PECOS I20250811004007); 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 1000 Laurel St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roger Kao, M.D.Gastroenterology Physician1982786133
- Scott Levenson, MDGastroenterology Physician1578548186
- Adrienne Nguyen, MDGastroenterology Physician1376635219
Verify Alyssa Gayle Caplan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A179987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average gastroenterology physician in 2024
13 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $172.99
2 payments; by number, the most common kind was food and beverage; the largest payer was Mallinckrodt Hospital Products Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Digestive Care Associates, A Medical CorporationSan Carlos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alyssa Gayle Caplan among 2,140 gastroenterology physician records in California
Alyssa Gayle Caplan 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 2019, is newer than 96% of them.
- NPI issued2019 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2019 · median 2002 among the 1,538 with a school on file
- Record last updated2025 · 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 San Carlos → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Roger Kao, M.D.San Carlos, CA 940701982786133
- Scott Levenson, MDSan Carlos, CA 940701578548186
- Adrienne Nguyen, MDSan Carlos, CA 940701376635219
- Tohru Sato, MDSan Carlos, CA 940701497847248
- Ming-Shing Chiu, MDRedwood City, CA 940631154409712
- Francis Chui, MDRedwood City, CA 940631033297684
- Henry Chun, MDRedwood City, CA 940631952489502
- Christina Dimopoulos-Verma, MDRedwood City, CA 940631053976738
Common questions
What is Alyssa Gayle Caplan's NPI number?
Alyssa Gayle Caplan's National Provider Identifier (NPI) is 1144781915, issued on Mar 26, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Alyssa Gayle Caplan located?
The NPPES record lists a practice address at 1000 Laurel St, San Carlos, CA, 94070. Phone: (650) 596-8800. Providers update this record themselves, so call before visiting.
How can I verify Alyssa Gayle Caplan's license?
NPPES lists California license number A179987, 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 Alyssa Gayle Caplan prescribe under Medicare Part D?
In 2024, Alyssa Gayle Caplan had 13 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.