NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1225384431 PMH-NP
Verify on CMS → Tammy Acker, PMH-NP
Psychiatric/Mental Health Nurse Practitioner in Timonium, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,928 in Psychiatric/Mental Health Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
159
Medicare Part D claims · 23 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 895
MIPS score
84.8/100
▲ 1 pts above national avg 83.5 · Above neutral
What the federal data shows
Tammy Acker, PMH-NP reported a CMS MIPS final score of 84.8/100 - above the 83.5 national average - and filed 159 Medicare Part D claims in 2024.
- 84.8/100
- MIPS score · +1 vs avg
- 159
- Part D claims, 2024
- ≥42nd
- pct among measured MIPS (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Tammy Acker, PMH-NP
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1225384431), first enumerated 07/25/2012.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 159 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 84.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Acker with other Psychiatric/Mental Health Nurse Practitioner providers
Same primary specialty, same federal CMS NPPES roster.
All 9 Psychiatric/Mental Health Nurse Practitioner providers in Timonium, MD →
Also enrolled in Maryland
- Elisabeth Abamina-Lette, PMHNP-BC Baltimore, MD
- Christina Abange, NP Greenbelt, MD
- Itoro Abatai Baltimore, MD
- Ama Abban, PMHNP Jessup, MD
- Lindsay Abbott, PMHNP-BC Baltimore, MD
- Adebola Abe-Fapohunda, PMHNP-BC Upper Marlboro, MD
Other specialties in Timonium: Physical Therapist (79) · Clinical Social Worker (50) · Professional Counselor (30) · General Practice Dentistry (28)
CMS NPPES provider registry desk
NPI 1225384431 · Psychiatric/Mental Health Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · MIPS-INLINE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1225384431
- ENUM-MID 2012
- TAX-MID 45K Psychiatric/Mental Health
- MIPS-INLINE 84.8/100
- RX-LIGHT 159
- BOOK-LIGHT 1,912 in Maryland
- PHOTO-FINISH Hannah Reeves, NP · ±0.1
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Hannah Reeves, N…
Hannah Reeves, NP
84.7 MIPS pts
- Carlett Jethroe,…
Carlett Jethroe, APRN, FNP-C
84.7 MIPS pts
- Acker · this pro…
Acker · this provider
84.8 MIPS pts
- Alexa Murray · h…
Alexa Murray
84.9 MIPS pts
- Kathryn Johnson,…
Kathryn Johnson, NURSE PRACTITIONER
84.9 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Tammy Acker, PMH-NP's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
85 ≥ 42nd percentile 42% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Tammy Acker, PMH-NP sits
This provider among psychiatric/mental health nurse practitioner peers
Across the 1,808 psychiatric/mental health nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Tammy Acker, PMH-NP writes more Part D claims than 27% of them and scores higher on MIPS quality than 40% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one psychiatric/mental health nurse practitioner peer from a representative sample of 60; the gold marker is Tammy Acker, PMH-NP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Tammy Acker, PMH-NP?
Near national averagePrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
159 82% vs specialty avg
MIPS final score
84.8/100 1.3 pts vs avg
Specialty distribution in Maryland
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Tammy Acker, PMH-NP's 2023 MIPS final score plotted against the Psychiatric/Mental Health Nurse Practitioner national average
- MIPS Final Score
- 84.8/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1225384431 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | PMH-NP |
| Gender | Female |
| NPI Issued | 07/25/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.7753
Final Score
Measured-score avg: 83.5
58.961
Quality
92.79
Cost
77
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Tammy Acker, PMH-NP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Way Station Inc
Germantown, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
159
Total Claims
$16K
Total Drug Cost
23
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 159.267
- Total Day Supply
- 4,602
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 43.3 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 48% female / 52% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Tammy Acker, PMH-NP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Divalproex Sodium
Divalproex Sodium
26 claims
- Olanzapine
Olanzapine
21 claims
- Benztropine Mesylate
Benztropine Mesylate
14 claims
- Lithium Carbonate Er
Lithium Carbonate Er
14 claims
- Haloperidol
Haloperidol
13 claims
| Drug | Claims |
|---|---|
| Divalproex Sodium | 26 |
| Olanzapine | 21 |
| Benztropine Mesylate | 14 |
| Lithium Carbonate Er Lithium Carbonate | 14 |
| Haloperidol | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Psychiatric/Mental Health Nurse Practitioner in MD →
All providers in Maryland →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How Tammy Acker, PMH-NP fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
44,928
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
895
Avg Claims per Provider
Tammy Acker, PMH-NP's 159 claims are below the specialty average of 895.
Nationwide Psychiatric/Mental Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Acker, both outside Maryland so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (84.8 here).
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Acker.
One of 1,912 Psychiatric/Mental Health Nurse Practitioner providers enrolled in Maryland, 11 are shown on this page.
Genet Abera
CRNP-PMHNP
Silver Spring, MD
Karen Abernathy
Baltimore, MD
Zekarias Abessa
Severn, MD
Olayinka Abiodun
PMHNP
Elkton, MD
Kofo Abiru-Adebambo
Rosedale, MD
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Tammy Acker, PMH-NP's specialty? ▼
Tammy Acker, PMH-NP specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Timonium, Maryland. Credentials: PMH-NP.
How much does Tammy Acker, PMH-NP prescribe under Medicare Part D? ▼
In 2024, Tammy Acker, PMH-NP wrote 159 Medicare Part D claims totaling $16K in drug costs for 23 beneficiaries.
What is Tammy Acker, PMH-NP's Medicare quality score? ▼
Tammy Acker, PMH-NP has a CMS MIPS Final Score of 84.8/100 (Quality: 59, Cost: 92.8). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Tammy Acker, PMH-NP located? ▼
Tammy Acker, PMH-NP is located at 1931 GREENSPRING DRIVE, Timonium, MD, 21093. Phone: (410) 453-9553.
What is Tammy Acker, PMH-NP's NPI number? ▼
Tammy Acker, PMH-NP's National Provider Identifier (NPI) is 1225384431, issued on 07/25/2012.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 44,928 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 895 Medicare Part D claims per year.
What drugs does Tammy Acker, PMH-NP prescribe most often? ▼
Based on 2024 Medicare Part D data, Tammy Acker, PMH-NP's most frequently prescribed drugs include Divalproex Sodium, Olanzapine, Benztropine Mesylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tammy Acker, PMH-NP accept Medicare? ▼
Tammy Acker, PMH-NP appears in CMS Medicare data with 159 Part D claims and 23 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tammy Acker, PMH-NP's credentials? ▼
Tammy Acker, PMH-NP's NPI is 1225384431 with credentials PMH-NP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.