Stuart C. Seigel, MD
Endocrinology, Diabetes & Metabolism Physician · Laguna Niguel, CA
Stuart C. Seigel, MD is an endocrinology, diabetes & metabolism physician with a practice address in Laguna Niguel, California, and NPI 1073763983, issued on Sep 27, 2008. Check the license (California A147395, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Stuart C. Seigel
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- A147395 CA
MD60353269 WA
Self-reported in NPPES; status is on the state search - Practice location
- 30281 Golden Lantern, Laguna Niguel, CA 92677
- Phone
- (949) 495-7144
- Enumerated
- Sep 27, 2008
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (949) 495-0270
- Medicaid ID
- 2027608 WA
- Medicare enrollment
- Enrolled (PECOS I20170711003484); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 30281 Golden Lantern
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Valery Bergeron-Desimone, PA-CPhysician Assistant1801097704
- Bassam Bilal, M.D.Internal Medicine Physician1306890827
- Ji Chun, PA-CMedical Physician Assistant1982912945
- Vincent Duda, MDInternal Medicine Physician1104883610
- Amitpal Kohli, M.D.Endocrinology, Diabetes & Metabolism Physician1215151071
- Lothar McMillian, M.D.Family Medicine Physician1588748891
Verify Stuart C. Seigel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A147395Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,395 Medicare Part D claims for 252 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of claims.
Most prescribed
- Ozempic127 claims
- Levothyroxine Sodium89 claims
- Humalog Kwikpen U-10087 claims
- Nano 2nd Gen Pen Needle86 claims
- Metformin Hcl Er84 claims
- Lantus Solostar79 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: $265.59
2 payments; by number, the most common kind was food and beverage; the largest payer was Corcept Therapeutics. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Telemedicine Group PCRancho Cucamonga, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stuart C. Seigel among 1,131 endocrinology, diabetes & metabolism physician records in California
Stuart C. Seigel, MD is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 36% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2008 · median 2003 among the 779 with a school on file
- Record last updated2018 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Laguna Niguel → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Amitpal Kohli, M.D.Laguna Niguel, CA 926771215151071
- Maryam Nemati, M.D.Laguna Niguel, CA 926771750872305
- Lan Nguyen, MDWestminster, CA 926831710915673
- Andy NguyenWestminster, CA 926831851746028
- Nicholas Tran, M.D.Westminster, CA 926831265498349
- Afshin Hamidi, M.D.Rancho Santa Margarita, CA 926881609222090
- David Ahn, MDNewport Beach, CA 926631184949570
- Alireza AmirpourNewport Beach, CA 926631275997900
Common questions
What is Stuart C. Seigel, MD's NPI number?
Stuart C. Seigel, MD's National Provider Identifier (NPI) is 1073763983, issued on Sep 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Stuart C. Seigel, MD located?
The NPPES record lists a practice address at 30281 Golden Lantern, Laguna Niguel, CA, 92677. Phone: (949) 495-7144. Providers update this record themselves, so call before visiting.
How can I verify Stuart C. Seigel, MD's license?
NPPES lists California license number A147395, 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 Stuart C. Seigel, MD prescribe under Medicare Part D?
In 2024, Stuart C. Seigel, MD had 1,395 Medicare Part D claims for 252 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.