Erin Gregg Newman, M.D.
Internal Medicine Physician · Orange, CA
Erin Gregg Newman, M.D. is an internal medicine physician with a practice address in Orange, California, and NPI 1043542871, issued on Feb 3, 2010. Check the license (California A 110997, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Erin Gregg Newman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A 110997 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Dr S Bldg 29, Orange, CA 92868
- Phone
- (714) 456-7002
- Enumerated
- Feb 3, 2010
- Record last updated
- Mar 21, 2023
- Medicaid ID
- 1043542871 CA
- Medicare enrollment
- Enrolled (PECOS I20190211001984); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 101 The City Dr S Bldg 29
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Erin Gregg Newman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A 110997Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,270 Medicare Part D claims for 201 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium85 claims
- Losartan Potassium79 claims
- Atorvastatin Calcium75 claims
- Amlodipine Besylate64 claims
- Levothyroxine Sodium57 claims
- Omeprazole32 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.
Bills Medicare through one group practice
- UC RegentsOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erin Gregg Newman among 17,696 internal medicine physician records in California
Erin Gregg Newman, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Orange → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jane Abdelhadi, M.D.Orange, CA 928681124097100
- Edwin Alexander, M.D.Orange, CA 928681659315752
- Romilla Batra, MDOrange, CA 928681871545038
- Ronald Daoud, M.D.Orange, CA 928681093732992
- Nadia Elihu, M.D.Orange, CA 928681659340156
- Roy Herndon, M.D.Orange, CA 928681417928383
- Deepti Pandita, MDOrange, CA 928681255358727
- Maryam Rahimi, MDOrange, CA 928681043268949
Common questions
What is Erin Gregg Newman, M.D.'s NPI number?
Erin Gregg Newman, M.D.'s National Provider Identifier (NPI) is 1043542871, issued on Feb 3, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Erin Gregg Newman, M.D. located?
The NPPES record lists a practice address at 101 The City Dr S Bldg 29, Orange, CA, 92868. Phone: (714) 456-7002. Providers update this record themselves, so call before visiting.
How can I verify Erin Gregg Newman, M.D.'s license?
NPPES lists California license number A 110997, 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 Erin Gregg Newman, M.D. prescribe under Medicare Part D?
In 2024, Erin Gregg Newman, M.D. had 1,270 Medicare Part D claims for 201 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.