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MARK KLEIN M.D.
NPI 1194776419
Specialist in Washington, DC

Active since May 12, 2006PECOS Enrolled
2141 K ST NW, STE 900, WASHINGTON, DC 20037(202) 223-9722(703) 280-5098 Get Directions Write a Review

NPPES record last updated: January 16, 2008. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mark Klein M.d. NPPES

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

MARK KLEIN M.D. (NPI 1194776419) is an individual specialist in Washington, District Of Columbia, licensed in District Of Columbia (MD11986) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194776419
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameMARK KLEINCredential: M.D.
Location Address2141 K ST NW, STE 900Washington, DC 20037-1810
Mailing Address3015 Williams Dr, Ste 200Fairfax, VA 22031-4623 · (703) 641-9133 · Fax (703) 280-5098
Phone(202) 223-9722
Fax(703) 280-5098
Sole ProprietorNo
Enumeration DateMay 12, 2006
Last NPPES UpdateJanuary 16, 2008
✔ NPI 1194776419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in DC · MD11986
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
2141 K ST NW, Washington, DC 20037
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Other Identifiers 2

Medicare ID-Type Unspecified453339W85
Medicare UPINC89119

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Klein M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Other Providers at the Same Location NPPES 20

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

JUDITH MASLAR M.D.
Specialist
2141 K ST NW, STE 900
WASHINGTON, DC 20037
District of Columbia (202) 223-9722
MRS. AZUCENA WHERRY RN, BSN
Registered Nurse
2141 K ST NW, SUITE 501
WASHINGTON, DC 20037
District of Columbia (202) 496-6321
MS. SUSAN HANEY FNP, MA
Nurse Practitioner (Family)
2141 K ST NW, SUITE 501
WASHINGTON, DC 20037
District of Columbia (202) 994-6827
MELONY TEAGUE RN, BSN, IBCLC
Registered Nurse (Lactation Consultant)
2141 K ST NW, SUITE 3
WASHINGTON, DC 20037
District of Columbia (202) 293-5182
STEPHANIE ALESKOW STEIN MD, PLLC
Clinic/Center (Medical Specialty)
2141 K ST NW, SUITE 701
WASHINGTON, DC 20037
District of Columbia (202) 466-7266
MS. BETHANY BAIRD SKELTON C-PNP
Nurse Practitioner (Pediatrics)
2141 K ST NW
WASHINGTON, DC 20037
District of Columbia (202) 833-4543
MAUREEN LOPINA
Lactation Consultant, Non-RN
2141 K ST NW, SUITE 3
WASHINGTON, DC 20037
District of Columbia (202) 293-5182
TRAVELERS MEDICAL SERVICE OF WASHINGTON
Clinic/Center (Health Service)
2141 K ST NW, STE 408
WASHINGTON, DC 20037
District of Columbia (202) 466-8109

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 Mark Klein's NPI number?

The NPI number for Mark Klein is 1194776419. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Where is Mark Klein located?

Mark Klein practices at 2141 K St NW Ste 900, Washington, DC 20037. The listed phone number is (202) 223-9722.

What is Mark Klein's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Mark Klein enrolled in Medicare?

Yes. Mark Klein is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mark Klein was last updated on January 16, 2008. NPI Profile syncs with the weekly NPPES data releases published by CMS.