Edward Andrew O'Regan, M.D.
Hospitalist Physician · Chico, CA
Edward Andrew O'Regan, M.D. is a hospitalist physician with a practice address in Chico, California, and NPI 1972543379, issued on Jun 7, 2006. Check the license (California A44337, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Edward Andrew O'Regan
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A44337 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1531 Esplanade, Chico, CA 95926
- Phone
- (530) 896-7455
- Enumerated
- Jun 7, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (530) 896-1730
- Medicare enrollment
- Enrolled (PECOS I20110210000114); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 1531 Esplanade
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danny Abifadel, PHARM.D.Pharmacotherapy Pharmacist1427245455
- Bruce Aikin, MDEmergency Medicine Physician1679583074
- Mark Allen, M.D.Psychiatry Physician1114155256
- Francisco Alvarez, M.D.Hospitalist Physician1588690648
- Kelley Alvarez, P.A.Physician Assistant1912393448
- Travis Anderson, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1730456468
Verify Edward Andrew O'Regan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A44337Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average hospitalist physician in 2024
373 Medicare Part D claims for 126 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Isosorbide Mononitrate Er20 claims
- Atorvastatin Calcium16 claims
- Eliquis16 claims
- Hydrocodone-Acetaminophen14 claims
- Clopidogrel13 claims
- Cephalexin12 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): 76.7 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).
Bills Medicare through 2 group practices
- Enloe Health And WellnessChico, CA
- Enloe Medical CenterChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Edward Andrew O'Regan among 3,099 hospitalist physician records in California
Edward Andrew O'Regan, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1982 · median 2010 among the 2,505 with a school on file
- Record last updated2007 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Chico → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Francisco Alvarez, M.D.Chico, CA 959261588690648
- Matthew Baska, D.O.Chico, CA 959261700146347
- Nicholas Gaskill, MDChico, CA 959261194349639
- Attila Kasza, M.D.Chico, CA 959261952340937
- Sean Maiorano, D.O.Chico, CA 959261487693552
- Roshanak Najibi, M.DChico, CA 959261710326087
- Suresh Kumar Pasya, M.D.Chico, CA 959261871510651
- Vikram Reddy, MDChico, CA 959261982694436
Common questions
What is Edward Andrew O'Regan, M.D.'s NPI number?
Edward Andrew O'Regan, M.D.'s National Provider Identifier (NPI) is 1972543379, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Edward Andrew O'Regan, M.D. located?
The NPPES record lists a practice address at 1531 Esplanade, Chico, CA, 95926. Phone: (530) 896-7455. Providers update this record themselves, so call before visiting.
How can I verify Edward Andrew O'Regan, M.D.'s license?
NPPES lists California license number A44337, 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 Edward Andrew O'Regan, M.D. prescribe under Medicare Part D?
In 2024, Edward Andrew O'Regan, M.D. had 373 Medicare Part D claims for 126 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Edward Andrew O'Regan, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.7 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.