MARTHA AMIEWALAN CRNP
NPI 1629527866
Nurse Practitioner - Family in Washington, DC

Active since September 29, 2016PECOS EnrolledAccepts Medicare Assignment
86.01/100
CMS Quality Rating
4555 WISCONSIN AVE NW, WASHINGTON, DC 20016(202) 537-1587 Get Directions Write a Review

NPPES record last updated: February 23, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 23, 2018, Sep 29, 2016 (2 updates tracked since 2016).

About Martha Amiewalan Crnp NPPES

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

MARTHA AMIEWALAN CRNP (NPI 1629527866) is an individual family provider in Washington, District Of Columbia, licensed in District Of Columbia (RN1029454) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1629527866
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARTHA AMIEWALANCredential: CRNP
Location Address4555 WISCONSIN AVE NWWashington, DC 20016-4619
Mailing Address4555 Wisconsin Ave NwWashington, DC 20016-4619 · (240) 838-1319
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateSeptember 29, 2016
Last NPPES UpdateFebruary 23, 20182 updates tracked since enumeration
✔ NPI 1629527866 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
Licenses✔ Licensed in DC · RN1029454✔ Licensed in MD · R199184
4555 WISCONSIN AVE NW, Washington, DC 20016

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Martha Amiewalan Crnp 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 ID244517936
PECOS Enrollment IDI20170505001891, I20170505001944
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Martha Amiewalan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Anesthesiology
2150 PENNSYLVANIA AVE NW, SUITE 10-409A
Washington, DC 20037
  • Reassigned Medicare billing, District of Columbia enrollment
  • 1,275 clinicians in this Medicare group
Nephrology
5721 GROSVENOR LN
Bethesda, MD 20814
  • Reassigned Medicare billing, District of Columbia and Maryland enrollments
  • Also billed through NPI 1003782707 (Maryland)
  • 119 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20016 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

86.01/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.92
Improvement Activities40
Cost93.86

Other Providers at the Same Location NPPES 6

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

Pharmacy
4555 WISCONSIN AVE NW
WASHINGTON, DC 20016
Nurse Practitioner (Family)
4555 WISCONSIN AVE NW
WASHINGTON, DC 20016
Pharmacist
4555 WISCONSIN AVE NW
WASHINGTON, DC 20016
Nurse Practitioner (Family)
4555 WISCONSIN AVE NW
WASHINGTON, DC 20016
Pharmacist
4555 WISCONSIN AVE NW
WASHINGTON, DC 20016
Nurse Practitioner (Family)
4555 WISCONSIN AVE NW
WASHINGTON, DC 20016

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 Martha Amiewalan's NPI number?

The NPI number for Martha Amiewalan is 1629527866. It was assigned to this individual provider in the NPPES registry on September 29, 2016.

Where is Martha Amiewalan located?

Martha Amiewalan practices at 4555 Wisconsin Ave NW, Washington, DC 20016. The listed phone number is (202) 537-1587.

What is Martha Amiewalan's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Martha Amiewalan enrolled in Medicare?

Yes. Martha Amiewalan 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.

Which organizations bill Medicare for Martha Amiewalan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martha Amiewalan reassigns Medicare benefits to 2 organizations: Medical Faculty Associates, Inc (Washington, DC) and Synergy Medical Group LLC (Bethesda, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Martha Amiewalan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Martha Amiewalan was last updated on February 23, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.