Seth Montgomery Sullivan, M.D.
Family Medicine Physician · Norwalk, CT
Seth Montgomery Sullivan, M.D. is a family medicine physician with a practice address in Norwalk, Connecticut, and NPI 1750496048, issued on Aug 20, 2006. Check the license (Connecticut 048044, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Seth Montgomery Sullivan
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 048044 CT
Self-reported in NPPES; status is on the state search - Practice location
- 34 Maple St, Norwalk, CT 06850
- Phone
- (203) 852-3045
- Enumerated
- Aug 20, 2006
- Record last updated
- May 25, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (203) 855-3589
- Medicaid ID
- 100457510A KS
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 958 in Connecticut → Look up another NPI →
Also registered at 34 Maple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Wasin Ahuja, M.D.Hospitalist Physician1932584588
Verify Seth Montgomery Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 048044Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average family medicine physician in 2024
2,628 Medicare Part D claims for 145 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium160 claims
- Metoprolol Succinate95 claims
- Rosuvastatin Calcium94 claims
- Eliquis83 claims
- Losartan Potassium72 claims
- Amlodipine Besylate70 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: $593.70
28 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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.
Seth Montgomery Sullivan among 958 family medicine physician records in Connecticut
Seth Montgomery Sullivan, M.D. is one of 958 family medicine physician records with a practice address in Connecticut. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 57% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2011 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Norwalk
They are 24 of the 1,993 NPPES records with a practice address in Norwalk, and 958 family medicine physician records in Connecticut.
All 958 in Connecticut → Every provider in Norwalk → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jennifer Chovitch, D.O.Norwalk, CT 068501689058695
- Liane Conte, DONorwalk, CT 068501174183875
- Tina Gardner, MDNorwalk, CT 068501629050281
- Anna Jamrozik, MDNorwalk, CT 068501720071665
- Katherine Mathew, MDNorwalk, CT 068501144859711
- Theresa Maxam, FNP-BC, APRNNorwalk, CT 068501053293142
- Kamilah Rose, M.D.Norwalk, CT 068501366704199
- Lesya StetskoNorwalk, CT 068501073475240
Common questions
What is Seth Montgomery Sullivan, M.D.'s NPI number?
Seth Montgomery Sullivan, M.D.'s National Provider Identifier (NPI) is 1750496048, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Seth Montgomery Sullivan, M.D. located?
The NPPES record lists a practice address at 34 Maple St, Norwalk, CT, 06850. Phone: (203) 852-3045. Providers update this record themselves, so call before visiting.
How can I verify Seth Montgomery Sullivan, M.D.'s license?
NPPES lists Connecticut license number 048044, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Seth Montgomery Sullivan, M.D. prescribe under Medicare Part D?
In 2024, Seth Montgomery Sullivan, M.D. had 2,628 Medicare Part D claims for 145 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.