Sean Christopher Flynn, D.O.
Internal Medicine Physician · Havertown, PA
Sean Christopher Flynn, D.O. is an internal medicine physician with a practice address in Havertown, Pennsylvania, and NPI 1386888121, issued on Apr 23, 2009. Check the license (Pennsylvania OS016090, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Sean Christopher Flynn
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- OS016090 PA
OT012983 PA
Self-reported in NPPES; status is on the state search - Practice location
- 525 W Chester Pike Ste 201, Havertown, PA 19083
- Phone
- (610) 449-9666
- Enumerated
- Apr 23, 2009
- Record last updated
- Jun 9, 2025
- Medicare enrollment
- Enrolled (PECOS I20120706000218); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 525 W Chester Pike Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia Clancy, M.D.Internal Medicine Physician1649228552
- Anastasia Karamanides, MDFamily Medicine Physician1972526218
Verify Sean Christopher Flynn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS016090Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
9,950 Medicare Part D claims for 794 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 398 claims were for opioids.
Most prescribed
- Atorvastatin Calcium395 claims
- Rosuvastatin Calcium387 claims
- Amlodipine Besylate337 claims
- Lorazepam337 claims
- Lisinopril312 claims
- Levothyroxine Sodium245 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
- Main Line HealthcareHavertown, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean Christopher Flynn among 7,300 internal medicine physician records in Pennsylvania
Sean Christopher Flynn, D.O. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 47% of them.
- NPI issued2009 · 47% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2005 · median 2008 among the 4,208 with a school on file
- Record last updated2025 · 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 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 internal medicine physician records list a practice address in Havertown
They are 10 of the 745 NPPES records with a practice address in Havertown, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Havertown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Veronica Angulo Diaz, M.DHavertown, PA 190831871848671
- Patricia Clancy, M.D.Havertown, PA 190831649228552
- Leroy Fleischer, M.D.Havertown, PA 190831902809791
- Stephen Humbert, DOHavertown, PA 190831871595041
- Sakthipriya Janarthanan, MDHavertown, PA 190831275828253
- Xiaobin Li, M.D.Havertown, PA 190831346225034
- Lin LiuHavertown, PA 190831063809473
- Kyong Bin Park, M.D.Havertown, PA 190831023036134
Common questions
What is Sean Christopher Flynn, D.O.'s NPI number?
Sean Christopher Flynn, D.O.'s National Provider Identifier (NPI) is 1386888121, issued on Apr 23, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Sean Christopher Flynn, D.O. located?
The NPPES record lists a practice address at 525 W Chester Pike Ste 201, Havertown, PA, 19083. Phone: (610) 449-9666. Providers update this record themselves, so call before visiting.
How can I verify Sean Christopher Flynn, D.O.'s license?
NPPES lists Pennsylvania license number OS016090, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sean Christopher Flynn, D.O. prescribe under Medicare Part D?
In 2024, Sean Christopher Flynn, D.O. had 9,950 Medicare Part D claims for 794 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.