Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP
Psychiatric/Mental Health Nurse Practitioner · Catonsville, MD
Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP is a psychiatric/mental health nurse practitioner with a practice address in Catonsville, Maryland, and NPI 1205587284, issued on Jan 12, 2022. Check the license (Maryland R239396, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Chiamaka Adaku Nnah
- Credential
- RN, PMHNP-BC, DNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License numbers
- R239396 MD
1227868 TX
0024195519 VA
Self-reported in NPPES; status is on the state search - Practice location
- 405 Frederick RD Ste 11, Catonsville, MD 21228
- Phone
- (443) 468-4838
- Enumerated
- Jan 12, 2022
- Record last updated
- Mar 17, 2026
- Fax
- (410) 231-6333
- Medicare enrollment
- Enrolled (PECOS I20221116003111); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 2,373 in Maryland → Look up another NPI →
Also registered at 405 Frederick RD Ste 11
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Onyinyechi Dimukeje, PMHNPPsychiatric/Mental Health Nurse Practitioner1003761370
- Tierra Hatcher, CRNPPsychiatric/Mental Health Nurse Practitioner1790679140
Verify Chiamaka Adaku Nnah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R239396Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
133 Medicare Part D claims for 11 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Trazodone Hcl24 claims
- Hydroxyzine Pamoate18 claims
- Sertraline Hcl16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $109.29
1 payment: food and beverage; the largest payer was Alkermes, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Serenity Wellness Mental Health Center LLCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chiamaka Adaku Nnah among 2,373 psychiatric/mental health nurse practitioner records in Maryland
Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP is one of 2,373 psychiatric/mental health nurse practitioner records with a practice address in Maryland. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 56% of them.
- NPI issued2022 · 56% of these records are older, 35% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2021 · median 2021 among the 1,409 with a school on file
- Record last updated2026 · 19% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 psychiatric/mental health nurse practitioner records list a practice address in Catonsville
They are 35 of the 1,023 NPPES records with a practice address in Catonsville, and 2,373 psychiatric/mental health nurse practitioner records in Maryland.
All 2,373 in Maryland → Every provider in Catonsville → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Nicole Hawkins, CRNPCatonsville, MD 212281477925345
- Tenni John-Idiagbonya, FNP, PMHNPCatonsville, MD 212281053850008
- Amanda Miller, PMHNPCatonsville, MD 212281316337603
- Joy Odinammadu, PMHNP-BCCatonsville, MD 212281023486263
- Nina Okpere, CRNPCatonsville, MD 212281487185021
- Ifeoluwa Oyefeso, DNP PMHNPCatonsville, MD 212281598241002
- Oluwakemi Oyefusi, APRN, CRNPCatonsville, MD 212281124314646
- Cheryl Payne, DNP,CRNP-PMHCatonsville, MD 212281922330752
Common questions
What is Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP's NPI number?
Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP's National Provider Identifier (NPI) is 1205587284, issued on Jan 12, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP located?
The NPPES record lists a practice address at 405 Frederick RD Ste 11, Catonsville, MD, 21228. Phone: (443) 468-4838. Providers update this record themselves, so call before visiting.
How can I verify Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP's license?
NPPES lists Maryland license number R239396, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP prescribe under Medicare Part D?
In 2024, Chiamaka Adaku Nnah, RN, PMHNP-BC, DNP had 133 Medicare Part D claims for 11 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.