Brandon Gregory Twombly, DO
Family Medicine Physician · Bryn Mawr, PA
Brandon Gregory Twombly, DO is a family medicine physician with a practice address in Bryn Mawr, Pennsylvania, and NPI 1013595396, issued on Mar 30, 2021. Check the license (Pennsylvania OS022995, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Brandon Gregory Twombly
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS022995 PA
Self-reported in NPPES; status is on the state search - Practice location
- 955 E Haverford RD Ste 300, Bryn Mawr, PA 19010
- Phone
- (610) 525-2990
- Enumerated
- Mar 30, 2021
- Record last updated
- Aug 12, 2025
- Fax
- (610) 525-2099
- Medicare enrollment
- Enrolled (PECOS I20230831000079); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 955 E Haverford RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Priscilla Chiu, MDFamily Medicine Physician1861472474
- Claudia Hargrove, MDFamily Medicine Physician1609076876
- Annamarie Lammendola-Melone, DOFamily Medicine Physician1275599193
Verify Brandon Gregory Twombly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS022995Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average family medicine physician in 2024
636 Medicare Part D claims for 134 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium57 claims
- Amlodipine Besylate47 claims
- Metformin Hcl33 claims
- Lisinopril28 claims
- Gabapentin26 claims
- Omeprazole24 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: $719.65
21 payments; by number, the most common kind was food and beverage; the largest payer was Sun Pharmaceutical Industries Inc. 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.
Bills Medicare through one group practice
- Bryn Mawr Medical Specialists AssociationBryn Mawr, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brandon Gregory Twombly among 7,483 family medicine physician records in Pennsylvania
Brandon Gregory Twombly, DO is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 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 2021, is newer than 86% of them.
- NPI issued2021 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2021 · median 2005 among the 4,529 with a school on file
- Record last updated2025 · 58% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 family medicine physician records list a practice address in Bryn Mawr
They are 41 of the 1,496 NPPES records with a practice address in Bryn Mawr, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Bryn Mawr → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christine Black-Langenau, D.O.Bryn Mawr, PA 190101548375348
- Brian BullockBryn Mawr, PA 190101376648311
- Anthony Camp, M.D.Bryn Mawr, PA 190101407836174
- Priscilla Chiu, MDBryn Mawr, PA 190101861472474
- Wendy Fuhr, MDBryn Mawr, PA 190101770555864
- John Gimpel, D.O.Bryn Mawr, PA 190101376533596
- Sean Green, M.D.Bryn Mawr, PA 190101548296601
- Scott Greenberg, MDBryn Mawr, PA 190101972653384
Common questions
What is Brandon Gregory Twombly, DO's NPI number?
Brandon Gregory Twombly, DO's National Provider Identifier (NPI) is 1013595396, issued on Mar 30, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Brandon Gregory Twombly, DO located?
The NPPES record lists a practice address at 955 E Haverford RD Ste 300, Bryn Mawr, PA, 19010. Phone: (610) 525-2990. Providers update this record themselves, so call before visiting.
How can I verify Brandon Gregory Twombly, DO's license?
NPPES lists Pennsylvania license number OS022995, 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 Brandon Gregory Twombly, DO prescribe under Medicare Part D?
In 2024, Brandon Gregory Twombly, DO had 636 Medicare Part D claims for 134 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.