Tammy Acker, PMH-NP
NPI 1225384431 · Psychiatric/Mental Health Nurse Practitioner · Timonium, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Acker, PMH-NP is a Psychiatric/Mental Health Nurse Practitioner provider in Timonium, MD (NPI 1225384431).
Provider details
- NPI number
- 1225384431
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMH-NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- R188521 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
16 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 16 | $167 |
Typical Medicare-allowed amounts for these services range $167–$167 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Divalproex Sodium | 26 |
| Olanzapine | 21 |
| Benztropine Mesylate | 14 |
| Lithium Carbonatebrand: Lithium Carbonate Er | 14 |
| Haloperidol | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 2225 N Charles StBaltimore, MD 21218-5778Phone: (410) 453-9553
- 288 E Green StWestminster, MD 21157-5410Phone: (410) 453-9553
Registry dates
- Enumerated
- 2012-07-25
- Last updated
- 2024-09-11
- Certified
- 2024-09-11
Frequently asked questions
- What is Tammy Acker's NPI number?
- Tammy Acker's National Provider Identifier (NPI) is 1225384431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Acker's specialty?
- Tammy Acker is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Acker located?
- Tammy Acker's practice location on file with NPPES is 1931 Greenspring Drive, Timonium, MD 21093.
- What is Tammy Acker's phone number?
- The practice phone number listed in the NPPES registry for Tammy Acker is (410) 453-9553.
- Does Tammy Acker accept Medicare?
- Tammy Acker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Acker's NPI active?
- Yes — Tammy Acker's NPI (1225384431) is active in the NPPES registry as of the last update on 2024-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.