Lisa Hamaker Dumin, M.D.
Lisa Hamaker Dumin, M.D. is an Endocrinology, Diabetes & Metabolism Physician in Collegeville, PA, registered under NPI 1003024811.
Getting there
Here is what surrounds this office in Collegeville, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 0.50 mi away. A pharmacy sits 0.32 mi from the entrance (Wegmans Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.23 mi away.
Getting here and what is nearby
Restaurant Ember & Ale 181 ft ~1 min
99 Market Street, Collegeville 19426
Mo off; Tu-Th 15:00-22:00; Fr-Sa 11:00-22:00; Su 11:00-21:00
Restaurant House of India 183 ft ~1 min
121 Market Street, Collegeville 19426
Mo-Su 11:00-21:30
Coffee CraveWell Cafe 191 ft ~1 min
121 Market Street, Collegeville 19426
Mo-We 08:00-19:00; Th-Sa 08:00-20:00; Su 09:00-18:00
Restaurant Kumo Asian Bistro 268 ft ~2 min
99 Market Street, Collegeville 19426
Mo-Th 11:30-14:30,16:30-20:30; Fr-Sa 11:30-14:30,16:30-21:30; Su 16:00-20:30
Coffee Starbucks 0.23 mi ~5 min
500 Broad Street, Collegeville 19426
Mo-Fr 05:30-21:00; Sa 06:00-21:00; Su 06:00-20:30
Parking 0.26 mi ~6 min
Pharmacy Wegmans Pharmacy 0.32 mi ~7 min
600 Commerce Drive, Collegeville 19426
Mo-Fr 08:30-21:00; Sa 08:30-18:00; Su 09:00-16:00
Grocery Wegmans 0.33 mi ~7 min
600 Commerce Drive, Collegeville 19426
06:00-24:00
Parking 0.50 mi ~11 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| MD426368 | PA | Endocrinology, Diabetes & Metabolism… primary |
This provider holds licence MD426368 issued in PA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Endocrinology
- PAC ID
- 9234201922
- Enrollment ID
- I20080714000144
Medicare enrolment is recorded as approved under the provider type Practitioner - Endocrinology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Endocrinology, Diabetes & Metabolism covers
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems. NUCC Health Care Provider Taxonomy, code 207RE0101X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003024811 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 18, 2007 |
| Last updated | May 18, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | M.D. |
| Practice address |
100 MARKET ST STE 300 Collegeville, PA 19426 (484) 622-6401 Fax (484) 622-6403 |
| Mailing address |
346 BELROSE LN Wayne, PA 19087 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 2 | 4 | 8 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 8 | 8 | 2 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.