DR. CHIAMAKA ADAKU NNAH RN, PMHNP-BC, DNP
NPI 1205587284
Nurse Practitioner - Psychiatric/Mental Health in Catonsville, MD

Active since January 12, 2022PECOS EnrolledAccepts Medicare Assignment
405 FREDERICK RD STE 11, CATONSVILLE, MD 21228(443) 468-4838(410) 231-6333 Get Directions Write a Review

NPPES record last updated: March 17, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 17, 2026, Dec 2, 2025, May 7, 2025 and 1 more (4 updates tracked since 2022).

About Dr. Chiamaka Adaku Nnah Rn, Pmhnp-bc, Dnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHIAMAKA ADAKU NNAH RN, PMHNP-BC, DNP (NPI 1205587284) is an individual psychiatric/mental health provider in Catonsville, Maryland, licensed in Maryland (R239396) and active in the NPI registry since January 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1205587284
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameDR. CHIAMAKA ADAKU NNAHCredential: RN, PMHNP-BC, DNP
Location Address405 FREDERICK RD STE 11Catonsville, MD 21228-4607
Mailing Address3220 Ridgeway PlWindsor Mill, MD 21244-1021 · (443) 857-5355
Fax(410) 231-6333
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateJanuary 12, 2022
Last NPPES UpdateMarch 17, 20264 updates tracked since enumeration
NPPES CertifiedMarch 17, 2026
NPI 1205587284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
Licenses Licensed in MD · R239396 Licensed in TX · 1227868 Licensed in VA · 0024195519
Also ListedRegistered NurseTaxonomy 163W00000X · License R239396 (MD)
Also ListedRegistered Nurse · Psychiatric/Mental Health, Child & AdolescentTaxonomy 163WP0807X · License R239396 (MD)
Also ListedRegistered Nurse · Psychiatric/Mental Health, AdultTaxonomy 163WP0809X · License R239396 (MD)
Also ListedDay Training, Developmentally Disabled ServicesTaxonomy 251C00000X · License 0024195519 (VA)
405 FREDERICK RD STE 11, Catonsville, MD 21228

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Chiamaka Adaku Nnah Rn, Pmhnp-bc, Dnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557758315
PECOS Enrollment IDI20220425002739, I20221116003111
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21228 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Practitioner (Psychiatric/Mental Health)
405 FREDERICK RD STE 11
CATONSVILLE, MD 21228
Clinic/Center (Mental Health (Including Community Mental Health Center))
405 FREDERICK RD STE 11
BALTIMORE, MD 21228
Clinic/Center (Mental Health (Including Community Mental Health Center))
405 FREDERICK RD STE 11
CATONSVILLE, MD 21228
Nurse Practitioner (Psychiatric/Mental Health)
405 FREDERICK RD STE 11
CATONSVILLE, MD 21228

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Chiamaka Nnah's NPI number?

The NPI number for Chiamaka Nnah is 1205587284. It was assigned to this individual provider in the NPPES registry on January 12, 2022.

Where is Chiamaka Nnah located?

Chiamaka Nnah practices at 405 Frederick Rd Ste 11, Catonsville, MD 21228. The listed phone number is (443) 468-4838.

What is Chiamaka Nnah's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Chiamaka Nnah enrolled in Medicare?

Yes. Chiamaka Nnah is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Chiamaka Nnah accept?

Health plans from Providence Health Plan list Chiamaka Nnah as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Chiamaka Nnah was last updated on March 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.