NPPES file of Aug 9, 2026

Rehana S. Baqai, M.D.

Hematology & Oncology Physician · Corona, CA

Rehana S. Baqai, M.D. is a hematology & oncology physician with a practice address in Corona, California, and NPI 1164478855, issued on May 25, 2006. Check the license (California A48182, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164478855
Name
Rehana S. Baqai
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A48182 CA
Self-reported in NPPES; status is on the state search
Practice location
260 E Ontario Ave, Corona, CA 92879
Phone
(951) 371-2411
Enumerated
May 25, 2006
Record last updated
Sep 21, 2023
Fax
(951) 284-0177
Medicaid IDs
GR0093942 CA
GR0093941 CA
GR0093940 CA
Medicare enrollment
Enrolled (PECOS I20090526000510); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 260 E Ontario Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cresencia Banzuela, M.D.Pediatrics Physician1083639710
  2. Dina Hok, PA-CMedical Physician Assistant1316261936
  3. Rajnikant Patel, DDSDentist1407986805
  4. Lisa Rentschler, DDSGeneral Practice Dentistry1861691446
  5. Neal Shah, D.M.D.Dentist1588830962

Verify Rehana S. Baqai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A48182
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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39% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

533 Medicare Part D claims for 123 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.

  1. Rehana Baqai533
  2. Specialty average877

Most prescribed

  1. Anastrozole126 claims
  2. Bortezomib25 claims
  3. Hydroxyurea21 claims
  4. Tamoxifen Citrate19 claims
  5. Zarxio19 claims
  6. Dexamethasone Sodium Phosphate17 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: $1,107.30

52 payments; by number, the most common kind was food and beverage; the largest payer was Celgene Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Rehana Baqai$1,107.30
  2. Specialty average$7,481.41

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

  1. Los Angeles Hematology-Oncology Medical GroupLos Alamitos, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rehana S. Baqai among 1,583 hematology & oncology physician records in California

Rehana S. Baqai, M.D. is one of 1,583 hematology & oncology 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 54% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1982 · median 2003 among the 1,124 with a school on file
  • Record last updated2023 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Hussein Merza, MDCorona, CA 928791235409673
  2. Mohammadbagher Ziari, MDCorona, CA 928791962601047
  3. Gregory Gilmore, D.O.Corona, CA 928821205271640
  4. Rahul Dev Polineni, M.DCorona, CA 928821235375155
  5. Chih-Hong Young, M.D.Corona, CA 928821417919572
  6. Matthew Keating, M.D.Yorba Linda, CA 928861275948481
  7. Jeffrey Ahn, M.D.Orange, CA 928681902331630
  8. Zhaohui Arter, MDOrange, CA 928681184116451

Common questions

What is Rehana S. Baqai, M.D.'s NPI number?

Rehana S. Baqai, M.D.'s National Provider Identifier (NPI) is 1164478855, issued on May 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Rehana S. Baqai, M.D. located?

The NPPES record lists a practice address at 260 E Ontario Ave, Corona, CA, 92879. Phone: (951) 371-2411. Providers update this record themselves, so call before visiting.

How can I verify Rehana S. Baqai, M.D.'s license?

NPPES lists California license number A48182, 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 Rehana S. Baqai, M.D. prescribe under Medicare Part D?

In 2024, Rehana S. Baqai, M.D. had 533 Medicare Part D claims for 123 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.