CAROL VAN DOORN, LLC
CAROL VAN DOORN, LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003257171, based in Frederick, MD. It is classified under Clinical Social Worker.
Getting there
Here is what surrounds this office in Frederick, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 0.45 mi away at Carroll Creek Parking Deck. If you arrive early, there is a coffee shop 0.43 mi away.
Getting here and what is nearby
Restaurant Mon Bon Croissant 0.25 mi ~6 min
162 West Patrick Street, 21701
Parking West Patrick Street Parking Garage 0.28 mi ~6 min
Restaurant Frederick Social 0.31 mi ~7 min
Mo-Tu 12:00-21:00; We-Th 12:00-22:00; Fr 12:00-23:00; Sa 11:00-23:00; Su 11:00-19:00
Restaurant Black Hog BBQ 0.32 mi ~7 min
118 South Market Street, Frederick 21701
Mo,We-Th 11:00-21:00; Tu off; Fr-Sa 11:00-22:00; Su 11:00-20:00
Convenience Toniq 0.33 mi ~7 min
89 South Market Street, Frederick 21701
Parking Court Street Garage 0.35 mi ~7 min
Hotel Hollerstown Hill Bed and Breakfast 0.36 mi ~8 min
Coffee Crabapples Delicatessen 0.37 mi ~8 min
101 West Patrick Street, 21701
Mo-Fr 07:30-16:00; Sa 08:30-15:30
Coffee The Perfect Blend 0.38 mi ~8 min
Mo-Fr 07:00-16:00; Sa 08:00-15:00
Gas station Jefferson Street SERVICE CENTER 0.40 mi ~8 min
Coffee Cafe Nola 0.43 mi ~9 min
4 East Patrick Street, Frederick 21701
Mo 08:00-24:00; Tu 08:00-15:00; We-Sa 08:00-25:00; Su 08:00-24:00
Parking Carroll Creek Parking Deck 0.45 mi ~10 min
Gas station A-1 Choice 0.48 mi ~10 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 |
|---|---|---|
| 15354 | MD | Clinical Social Worker primary |
This provider holds licence 15354 issued in MD. 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 0042537672
- Enrollment ID
- O20150319001654
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003257171 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jul 17, 2013 |
| Last updated | Jan 29, 2015 |
| Status | Active |
| Practice address |
209 CENTER ST Frederick, MD 21701 (301) 351-7421 |
| Mailing address |
1743 CASTLE ROCK RD Frederick, MD 21701 |
| Other identifiers |
064812400
· Medicaid (MD) |
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 | 2 | 5 | 7 | 1 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 5 | 1 | 5 |
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.