2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1659688141 PMHNP
Verify on CMS →

ROBERT ALLEN-EMERSON, PMHNP

Psychiatric/Mental Health Nurse Practitioner in ANNAPOLIS, Maryland. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 148 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$648.1
20 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ROBERT ALLEN-EMERSON, PMHNP is a Psychiatric/Mental Health Nurse Practitioner ([object Object]) practicing in ANNAPOLIS, Maryland with a Medicare Part D prescribing footprint of 3K claims across 148 beneficiaries — 6% brand-name prescribing . Industry payments of $648.1 across 20 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ROBERT ALLEN-EMERSON, PMHNP filed 3,130 Medicare Part D claims in 2023 across ANNAPOLIS, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ROBERT ALLEN-EMERSON, PMHNP at a glance

Quality data not reported

NPI registry status

Active

Issued 09/07/2010

NPI 1659688141

Primary specialty

Psychiatric/Mental Health Nurse Practitioner

Mid-sized

39,953 US NPIs in this specialty

Medicare Part D claims

3,130 238% vs specialty avg

2023 prescription claims

Specialty avg: 927

Specialty distribution in Maryland

How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Maryland providers

Maryland providers

Psychiatric/Mental Health Nurse Practitioner share within Maryland

1. Psychiatric/Mental Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric/Mental Health Nurse Practitioner share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatric/Mental Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatric/Mental Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

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).

ROBERT ALLEN-EMERSON, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider practicing in ANNAPOLIS, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PMHNP. NPI: 1659688141. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ROBERT ALLEN-EMERSON, PMHNP appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding PMHNP credentials at 175 ADMIRAL COCHRANE DR STE 110, ANNAPOLIS, MD, 21401, with a listed phone of (410) 571-0888. NPI 1659688141 was issued on 09/07/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALLEN-EMERSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 3,130 prescription claims written by this provider, covering 148 Medicare beneficiaries and totaling roughly $450K in drug spend, split 6% brand-name and 94% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 39,953 enrolled providers across 54 states and an average of 927 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

175 ADMIRAL COCHRANE DR STE 110
ANNAPOLIS, MD 21401

Provider Details

NPI 1659688141
Specialty Psychiatric/Mental Health Nurse Practitioner
Credentials PMHNP
Gender Male
NPI Issued 09/07/2010

Hospital and facility affiliations

Facilities where ROBERT ALLEN-EMERSON, PMHNP 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.

ARUNDEL LODGE, INC.
EDGEWATER, 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).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for ROBERT ALLEN-EMERSON, PMHNP. Source: openpaymentsdata.cms.gov.

Total received

$648

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

ROBERT ALLEN-EMERSON, PMHNP — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 3,130 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

3,130
Total Claims
$450K
Total Drug Cost
148
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,961
Total Day Supply
115,602
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$319K
Generic Drug Cost
$131K

Patient Demographics

Average Patient Age
55.7 years
Avg HCC Risk Score
1.25
Gender Split
59% female / 41% male
Age Distribution
<65: 96, 65-74: 39, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Aripiprazole
163
Bupropion Xl
Bupropion Hcl
140
Clozapine
139
Quetiapine Fumarate
131
Trazodone Hcl
129
Benztropine Mesylate
121
Clonazepam
118
Lorazepam
115
Lamotrigine
105
Divalproex Sodium
96

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Psychiatric/Mental Health Nurse Practitioner Overview

How ROBERT ALLEN-EMERSON, PMHNP fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.

39,953
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider

ROBERT ALLEN-EMERSON, PMHNP's 3,130 claims are above the specialty average of 927.

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 ALLEN-EMERSON.

Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT ALLEN-EMERSON, PMHNP's specialty?
ROBERT ALLEN-EMERSON, PMHNP specializes in Psychiatric/Mental Health Nurse Practitioner and practices in ANNAPOLIS, Maryland. Credentials: PMHNP.
How much does ROBERT ALLEN-EMERSON, PMHNP prescribe under Medicare Part D?
In 2023, ROBERT ALLEN-EMERSON, PMHNP wrote 3,130 Medicare Part D claims totaling $450K in drug costs for 148 beneficiaries.
Where is ROBERT ALLEN-EMERSON, PMHNP located?
ROBERT ALLEN-EMERSON, PMHNP is located at 175 ADMIRAL COCHRANE DR STE 110, ANNAPOLIS, MD, 21401. Phone: (410) 571-0888.
What is ROBERT ALLEN-EMERSON, PMHNP's NPI number?
ROBERT ALLEN-EMERSON, PMHNP's National Provider Identifier (NPI) is 1659688141, issued on 09/07/2010.
Does ROBERT ALLEN-EMERSON, PMHNP prescribe more brand-name or generic drugs?
ROBERT ALLEN-EMERSON, PMHNP's prescribing is 6% brand-name and 94% generic drugs by claim count, with $319K in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US?
There are 39,953 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does ROBERT ALLEN-EMERSON, PMHNP prescribe most often?
Based on 2023 Medicare Part D data, ROBERT ALLEN-EMERSON, PMHNP's most frequently prescribed drugs include Aripiprazole, Bupropion Xl, Clozapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT ALLEN-EMERSON, PMHNP accept Medicare?
ROBERT ALLEN-EMERSON, PMHNP appears in CMS Medicare data with 3,130 Part D claims and 148 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT ALLEN-EMERSON, PMHNP's credentials?
ROBERT ALLEN-EMERSON, PMHNP's NPI is 1659688141 with credentials PMHNP. 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

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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
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 April 2026 (NPPES) / 2023 (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