Stephen Ac Parnell, M.D.
Gastroenterology Physician · Inglewood, CA
Stephen Ac Parnell, M.D. is a gastroenterology physician with a practice address in Inglewood, California, and NPI 1609968320, issued on Sep 29, 2006. Check the license (California G45223, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stephen Ac Parnell
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G45223 CA
Self-reported in NPPES; status is on the state search - Practice location
- 501 E Hardy St, Inglewood, CA 90301
- Phone
- (310) 671-7010
- Enumerated
- Sep 29, 2006
- Record last updated
- Dec 29, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (310) 680-6855
- Medicaid ID
- GR0027410 CA
- Medicare enrollment
- Enrolled (PECOS I20110128000725); accepts Medicare assignment
- Medical or professional school
- Howard University College Of Medicine, 1974
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 501 E Hardy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Immaculate Anebere, NPFamily Nurse Practitioner1720697683
- Sabrina BerkheimerBehavior Analyst1609635440
- Marjan Chegounchi, MDInternal Medicine Physician1285660456
- Eric Chew, PA-CMedical Physician Assistant1104972462
- Jack Farahi, M.D.Specialist1225034358
- Phillip Frankel, M.D.Specialist1962408070
Verify Stephen Ac Parnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45223Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average gastroenterology physician in 2024
1,402 Medicare Part D claims for 594 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf276 claims
- Omeprazole136 claims
- Pantoprazole Sodium117 claims
- Gavilyte-G102 claims
- Famotidine47 claims
- Atorvastatin Calcium36 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 MIPS final score for 2023 (Medicare payment program): 24.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,985.07
88 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Coast Gastroenterology A Medical Group Inc.Inglewood, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Ac Parnell among 2,140 gastroenterology physician records in California
Stephen Ac Parnell, M.D. is one of 2,140 gastroenterology 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 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1974 · median 2002 among the 1,538 with a school on file
- Record last updated2014 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Inglewood → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Eugene Christian, EUGENE CHRISTIANInglewood, CA 903011326266537
- Steven Lerner, M.D.Inglewood, CA 903011518059237
- Mark Lott, M.D.Inglewood, CA 903011821192139
- Beverly Chen, M.D.Redondo Beach, CA 902771154622454
- Tu Tran, M.D.Huntington Park, CA 902551467466243
- Mohan Bhasker, M.D.Gardena, CA 902471356426241
- William Essilfie, MDGardena, CA 902471588744627
- Rajeev Attam, MDDowney, CA 902421184694309
Common questions
What is Stephen Ac Parnell, M.D.'s NPI number?
Stephen Ac Parnell, M.D.'s National Provider Identifier (NPI) is 1609968320, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Ac Parnell, M.D. located?
The NPPES record lists a practice address at 501 E Hardy St, Inglewood, CA, 90301. Phone: (310) 671-7010. Providers update this record themselves, so call before visiting.
How can I verify Stephen Ac Parnell, M.D.'s license?
NPPES lists California license number G45223, 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 Stephen Ac Parnell, M.D. prescribe under Medicare Part D?
In 2024, Stephen Ac Parnell, M.D. had 1,402 Medicare Part D claims for 594 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Stephen Ac Parnell, M.D.'s MIPS final score?
The 2023 MIPS final score is 24.1 of 100. 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.