Lisa L. Hamaker Dumin, M.D.
Endocrinology, Diabetes & Metabolism Physician · Collegeville, PA
Lisa L. Hamaker Dumin, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Collegeville, Pennsylvania, and NPI 1003024811, issued on May 18, 2007. Check the license (Pennsylvania MD426368, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Lisa L. Hamaker Dumin
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- MD426368 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Market St Ste 300, Collegeville, PA 19426
- Phone
- (484) 622-6401
- Enumerated
- May 18, 2007
- Record last updated
- May 18, 2026
- Fax
- (484) 622-6403
- Medicare enrollment
- Enrolled (PECOS I20080714000144); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 485 in Pennsylvania → Look up another NPI →
Also registered at 100 Market St Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sumon Agarwala, MDEndocrinology, Diabetes & Metabolism Physician1073542718
- Nancy Bridgens, D.O.Maternal & Fetal Medicine Physician1689720963
- Vishal Datta, M.D.Endocrinology, Diabetes & Metabolism Physician1982654489
- Robert Dyer, MDSports Medicine (Orthopaedic Surgery) Physician1467983494
- Robert Talamo, MDFamily Medicine Physician1083722946
Verify Lisa L. Hamaker Dumin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD426368Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,893 Medicare Part D claims for 301 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Synthroid305 claims
- Levothyroxine Sodium191 claims
- Glimepiride185 claims
- Metformin Hcl Er153 claims
- Ozempic151 claims
- Metformin Hcl145 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: $380.38
23 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
- Fornance Physician Services IncCollegeville, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lisa L. Hamaker Dumin among 485 endocrinology, diabetes & metabolism physician records in Pennsylvania
Lisa L. Hamaker Dumin, M.D. is one of 485 endocrinology, diabetes & metabolism physician records with a practice address in Pennsylvania. 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 45% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2002 · median 2004 among the 334 with a school on file
- Record last updated2026 · 62% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 endocrinology, diabetes & metabolism physician records list a practice address in Collegeville
They are 6 of the 526 NPPES records with a practice address in Collegeville, and 485 endocrinology, diabetes & metabolism physician records in Pennsylvania.
All 485 in Pennsylvania → Every provider in Collegeville → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Sumon Agarwala, MDCollegeville, PA 194261073542718
- Christopher Bruno, DOCollegeville, PA 194261932385408
- Vishal Datta, M.D.Collegeville, PA 194261982654489
- Gayle Orczyk, M.D.Collegeville, PA 194261336294073
- Suzette Osei, M.D.Collegeville, PA 194261316164932
- Sherri Blackstone, MDLansdale, PA 194461043284722
- Ram Jhingan, MBBSLansdale, PA 194461053544791
- Claresa Levetan, MDLansdale, PA 194461063483469
Common questions
What is Lisa L. Hamaker Dumin, M.D.'s NPI number?
Lisa L. Hamaker Dumin, M.D.'s National Provider Identifier (NPI) is 1003024811, issued on May 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lisa L. Hamaker Dumin, M.D. located?
The NPPES record lists a practice address at 100 Market St Ste 300, Collegeville, PA, 19426. Phone: (484) 622-6401. Providers update this record themselves, so call before visiting.
How can I verify Lisa L. Hamaker Dumin, M.D.'s license?
NPPES lists Pennsylvania license number MD426368, 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 Lisa L. Hamaker Dumin, M.D. prescribe under Medicare Part D?
In 2024, Lisa L. Hamaker Dumin, M.D. had 2,893 Medicare Part D claims for 301 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.