Trixie Lorraine Cruz Pei, MD
Nephrology Physician · Napa, CA
Trixie Lorraine Cruz Pei, MD is a nephrology physician with a practice address in Napa, California, and NPI 1538664669, issued on Mar 29, 2018. Check the license (California A184644, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Trixie Lorraine Cruz Pei
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- A184644 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3230 Beard RD Ste 2537005, Napa, CA 94558
- Phone
- (707) 253-7005
- Enumerated
- Mar 29, 2018
- Record last updated
- Jul 26, 2023
- Fax
- (707) 253-7271
- Medicare enrollment
- Enrolled (PECOS I20230920000805); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,468 in California → Look up another NPI →
Verify Trixie Lorraine Cruz Pei in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A184644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average nephrology physician in 2024
814 Medicare Part D claims for 189 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Amlodipine Besylate81 claims
- Allopurinol63 claims
- Losartan Potassium62 claims
- Hydralazine Hcl38 claims
- Calcium Acetate36 claims
- Olmesartan Medoxomil32 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): 82.4 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: $728.35
28 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Nagarathna G Manjappa M D IncClearlake, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Trixie Lorraine Cruz Pei among 1,468 nephrology physician records in California
Trixie Lorraine Cruz Pei, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 93% of them.
- NPI issued2018 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2013 · median 2001 among the 1,128 with a school on file
- Record last updated2023 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in California
There are 1,468 nephrology physician records in California.
All 1,468 in California → Every provider in Napa → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Serena Bhela, M.D.Napa, CA 945581275873812
- Edwin Chiu, M.D.Napa, CA 945581659392223
- Nagarathna Manjappa, MDNapa, CA 945581710093349
- Geetha Narayan, MDNapa, CA 945581386625754
- Thomas Paukert, M.D.Napa, CA 945581013989540
- Jonathan Segal, MDMartinez, CA 945531780666164
- Archana Aggarwal, M.D.Castro Valley 94546, CA 945461326024084
- Gene-Yuan Chang, MDCastro Valley, CA 945461467731828
Common questions
What is Trixie Lorraine Cruz Pei, MD's NPI number?
Trixie Lorraine Cruz Pei, MD's National Provider Identifier (NPI) is 1538664669, issued on Mar 29, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Trixie Lorraine Cruz Pei, MD located?
The NPPES record lists a practice address at 3230 Beard RD Ste 2537005, Napa, CA, 94558. Phone: (707) 253-7005. Providers update this record themselves, so call before visiting.
How can I verify Trixie Lorraine Cruz Pei, MD's license?
NPPES lists California license number A184644, 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 Trixie Lorraine Cruz Pei, MD prescribe under Medicare Part D?
In 2024, Trixie Lorraine Cruz Pei, MD had 814 Medicare Part D claims for 189 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Trixie Lorraine Cruz Pei, MD's MIPS final score?
The 2023 MIPS final score is 82.4 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.