Lulu Rebecca Tsao
Allergy & Immunology (Internal Medicine) Physician · San Francisco, CA
Lulu Rebecca Tsao is an allergy & immunology (internal medicine) physician with a practice address in San Francisco, California, and NPI 1780047779, issued on Mar 29, 2016. Check the license (California A152982, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lulu Rebecca Tsao
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License number
- A152982 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave FL 2, San Francisco, CA 94143
- Phone
- (415) 353-2725
- Enumerated
- Mar 29, 2016
- Record last updated
- Aug 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (415) 353-3529
- Medicare enrollment
- Enrolled (PECOS I20210910002434); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 400 Parnassus Ave FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel BystritskyInfectious Disease Physician1194081984
- Kelli CochranNurse Practitioner1093307878
- Gerd Cropp, M.D.Pediatric Pulmonology Physician1851497960
- John Fangman, MDInfectious Disease Physician1881645737
- Natalie Fong, NPAcute Care Nurse Practitioner1881317451
- Patricia Freeman, PASurgical Physician Assistant1396751764
Verify Lulu Rebecca Tsao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A152982Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024
197 Medicare Part D claims for 52 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Privigen51 claims
- Azelastine Hcl28 claims
- Hizentra22 claims
- Dupixent Pen15 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): 74.5 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).
Industry payments in 2024: $57.23
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 321 providers of this specialty with any payment received $7,456.30 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 3 group practices
- Regents OF The University OF CaliforniaSan Francisco, CA
- Ucsf Medical Group Business ServicesBerkeley, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in California
There are 81 allergy & immunology (internal medicine) physician records in California.
Other allergy & immunology (internal medicine) physician records in California
- Shields Abernathy, M.D.Templeton, CA1508886235
- Sam Ahn, M.D.Napa, CA1558423814
- Fatima Ali, MDSacramento, CA1093045023
- Sowmya Arja, M.D.San Francisco, CA1215390166
- Anna Arroyo, MDStanford, CA1205102472
- Lawrence Awai, M.D.Clovis, CA1629510235
- Sally Bailey, MDSan Ramon, CA1700815677
- Tyler Basen, M.D.Mission Viejo, CA1184069692
- Sheila Bonilla-Tandoc, MD, MSLos Angeles, CA1457387805
- Geoffrey Carlson, MDTravis Afb, CA1174865588
Common questions
What is Lulu Rebecca Tsao's NPI number?
Lulu Rebecca Tsao's National Provider Identifier (NPI) is 1780047779, issued on Mar 29, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Lulu Rebecca Tsao located?
The NPPES record lists a practice address at 400 Parnassus Ave FL 2, San Francisco, CA, 94143. Phone: (415) 353-2725. Providers update this record themselves, so call before visiting.
How can I verify Lulu Rebecca Tsao's license?
NPPES lists California license number A152982, 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 Lulu Rebecca Tsao prescribe under Medicare Part D?
In 2024, Lulu Rebecca Tsao had 197 Medicare Part D claims for 52 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. Part D covers Medicare prescriptions only.
What is Lulu Rebecca Tsao's MIPS final score?
The 2023 MIPS final score is 74.5 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.