Anita Carmen Choy, MD
Allergy Physician · Palo Alto, CA
Anita Carmen Choy, MD is an allergy physician with a practice address in Palo Alto, California, and NPI 1639136690, issued on Apr 26, 2006. Check the license (California A50663, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Anita Carmen Choy
- Credential
- MD
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- A50663 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1101 Welch RD, Palo Alto, CA 94304
- Phone
- (650) 322-3847
- Enumerated
- Apr 26, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (650) 322-3249
- Medicare enrollment
- Enrolled (PECOS I20070216000271); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 157 in California → Look up another NPI →
Also registered at 1101 Welch RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Anita Carmen Choy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A50663Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average allergy physician in 2024
468 Medicare Part D claims for 90 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Montelukast Sodium87 claims
- Albuterol Sulfate Hfa41 claims
- Trelegy Ellipta39 claims
- Spiriva Respimat23 claims
- Azelastine Hcl20 claims
- Dexlansoprazole Dr20 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.
Industry payments in 2024: $366.75
11 payments; by number, the most common kind was food and beverage; the largest payer was Ucb, Inc. The 502 providers of this specialty with any payment received $9,080.33 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.
Anita Carmen Choy among 157 allergy physician records in California
Anita Carmen Choy, MD is one of 157 allergy physician records with a practice address in California. 69% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 31% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1986 · median 1992 among the 82 with a school on file
- Record last updated2023 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in California
There are 157 allergy physician records in California.
All 157 in California → Every provider in Palo Alto → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Hailen Mak, MDPalo Alto, CA 943041225083868
- Robert Bocian, M.D.Palo Alto, CA 943011184633745
- Peter Maguire, MDPalo Alto, CA 943011457360851
- Grace Yu, MDFremont, CA 943011538356225
- Russell Leong, M.D.San Francisco, CA 941181518961069
- Naveena Bobba, MDSan Francisco, CA 941101285705244
- Dean Kardassakis, MDSan Francisco, CA 941081811906571
- Valerie Jerdee, M.D.Brentwood, CA 945131134145394
Common questions
What is Anita Carmen Choy, MD's NPI number?
Anita Carmen Choy, MD's National Provider Identifier (NPI) is 1639136690, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Anita Carmen Choy, MD located?
The NPPES record lists a practice address at 1101 Welch RD, Palo Alto, CA, 94304. Phone: (650) 322-3847. Providers update this record themselves, so call before visiting.
How can I verify Anita Carmen Choy, MD's license?
NPPES lists California license number A50663, 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 Anita Carmen Choy, MD prescribe under Medicare Part D?
In 2024, Anita Carmen Choy, MD had 468 Medicare Part D claims for 90 beneficiaries; the average among allergy physician prescribers was 750. 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.