Charles Citrenbaum, PH.D.
Charles Citrenbaum, PH.D. is a Health Service Psychologist in Baltimore, MD, registered under NPI 1639297682. This provider registers 8 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 2 HAMILL RD. SUITE 322, Baltimore, MD 21210. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 897 | MD | Psychologist |
| 897 | MD | Addiction (Substance Use Disorder)… |
| 897 | MD | Clinical Psychologist |
| 897 | MD | Clinical Child & Adolescent Psychologist |
| 897 | MD | Exercise & Sports Psychologist |
| 897 | MD | Family Psychologist |
| 897 | MD | Forensic Psychologist |
| 897 | MD | Health Service Psychologist primary |
This provider holds licence 897 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
- Practitioner - Clinical Psychologist
- PAC ID
- 6901962687
- Enrollment ID
- I20090304000490
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Psychologist. 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 Health Service covers
A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974). NUCC Health Care Provider Taxonomy, code 103TH0100X
All registered taxonomy codes
This provider registers 8 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103T00000X | Psychologist | 897 | MD | |
| 103TA0400X | Addiction (Substance Use Disorder) Psychologist Addiction (Substance Use Disorder) | 897 | MD | |
| 103TC0700X | Clinical Psychologist Clinical | 897 | MD | |
| 103TC2200X | Clinical Child & Adolescent Psychologist Clinical Child & Adolescent | 897 | MD | |
| 103TE1100X | Exercise & Sports Psychologist Exercise & Sports | 897 | MD | |
| 103TF0000X | Family Psychologist Family | 897 | MD | |
| 103TF0200X | Forensic Psychologist Forensic | 897 | MD | |
| 103TH0100X | Health Service Psychologist Health Service | 897 | MD | primary |
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 | 1639297682 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 27, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | PH.D. |
| Practice address |
2 HAMILL RD. SUITE 322 Baltimore, MD 21210 (410) 433-6555 Fax (410) 433-6565 |
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 | 6 | 3 | 9 | 2 | 9 | 7 | 6 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 6 | 9 | 4 | 9 | 5 | 6 | 7 |
Sum = 78 · next multiple of 10 = 80 · check digit = 2 · actual last digit = 2
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.