NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1164052692 PMHNP
Verify on CMS → Gregory Obiwuma, PMHNP
Psychiatric/Mental Health Nurse Practitioner in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,776 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
384
Medicare Part D claims · 62 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Industry payments
$281.48
3 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Gregory Obiwuma, PMHNP filed 384 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in Washington, District of Columbia.
- 384
- Part D claims, 2023
- $281.48
- industry payments (Sunshine Act)
- ≥57th
- pct by Part D claim volume (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 Gregory Obiwuma, PMHNP
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1164052692), first enumerated 01/23/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 384 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$281.48 in reported industry payments (3 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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.
CMS NPPES provider registry desk
NPI 1164052692 · Psychiatric/Mental Health Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1164052692
- ENUM-RECENT 2020
- TAX-MID 41K Psychiatric/Mental Health
- RX-LIGHT 384
- BOOK-THIN 147 in District of Columbia
- PHOTO-ENUM Elizabeth Gawne · 2020
Gregory Obiwuma, PMHNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
384 ≥ 57th percentile 57% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Gregory Obiwuma, PMHNP?
Quality data not reportedPrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
384 59% vs specialty avg
Specialty distribution in District of Columbia
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among District of Columbia providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Psychiatric/Mental Health Nurse Practitioner. Verify directly:
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 | 1164052692 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | PMHNP |
| Gender | Male |
| NPI Issued | 01/23/2020 |
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 Gregory Obiwuma, PMHNP. Source: openpaymentsdata.cms.gov.
Total received
$281
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
384
Total Claims
$25K
Total Drug Cost
62
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 388
- Total Day Supply
- 11,493
- Generic Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 56.9 years
- Avg HCC Risk Score
- 1.58
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 37, 65-74: 24, 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.
What Gregory Obiwuma, PMHNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Sertraline Hcl
Sertraline Hcl
50 claims
- Trazodone Hcl
Trazodone Hcl
45 claims
- Quetiapine Fumarate
Quetiapine Fumarate
41 claims
- Benztropine Mesylate 19
Benztropine Mesylate
19 claims
- Citalopram Hbr 16
Citalopram Hbr
16 claims
- Risperidone 16
Risperidone
16 claims
- Escitalopram Oxalate 14
Escitalopram Oxalate
14 claims
- Lamotrigine 14
Lamotrigine
14 claims
| Drug | Claims |
|---|---|
| Sertraline Hcl | 50 |
| Trazodone Hcl | 45 |
| Quetiapine Fumarate | 41 |
| Benztropine Mesylate | 19 |
| Citalopram Hbr Citalopram Hydrobromide | 16 |
| Risperidone | 16 |
| Escitalopram Oxalate | 14 |
| Lamotrigine | 14 |
| Bupropion Xl Bupropion Hcl | 13 |
| Divalproex Sodium | 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 DC →
All providers in District of Columbia →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How Gregory Obiwuma, PMHNP fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
40,776
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider
Gregory Obiwuma, PMHNP's 384 claims are below the specialty average of 927.
Nationwide Psychiatric/Mental Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Obiwuma, both outside District of Columbia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatric/Mental Health Nurse Practitioner Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Obiwuma.
One of 147 Psychiatric/Mental Health Nurse Practitioner providers enrolled in District of Columbia, 5 are shown here.
Ilana Abramowitz
Washington, DC
Dr. Vanessa Acosta
APRN
Washington, DC
Modupe Adenekan
Washington, DC
Linda Adetola
Washington, DC
Dr. Adijat Adeyemi
PMHNP
Washington, DC
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gregory Obiwuma, PMHNP's specialty? ▼
Gregory Obiwuma, PMHNP specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Washington, District of Columbia. Credentials: PMHNP.
How much does Gregory Obiwuma, PMHNP prescribe under Medicare Part D? ▼
In 2023, Gregory Obiwuma, PMHNP wrote 384 Medicare Part D claims totaling $25K in drug costs for 62 beneficiaries.
Where is Gregory Obiwuma, PMHNP located? ▼
Gregory Obiwuma, PMHNP is located at 1818 NEW YORK AVE NE STE 233, Washington, DC, 20002. Phone: (202) 706-4428.
What is Gregory Obiwuma, PMHNP's NPI number? ▼
Gregory Obiwuma, PMHNP's National Provider Identifier (NPI) is 1164052692, issued on 01/23/2020.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 40,776 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 Gregory Obiwuma, PMHNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Obiwuma, PMHNP's most frequently prescribed drugs include Sertraline Hcl, Trazodone Hcl, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Obiwuma, PMHNP accept Medicare? ▼
Gregory Obiwuma, PMHNP appears in CMS Medicare data with 384 Part D claims and 62 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Obiwuma, PMHNP's credentials? ▼
Gregory Obiwuma, PMHNP's NPI is 1164052692 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
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 (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
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 May 2026.