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DR. JUSTIN LARKIN M.D.
NPI 1962729798
Student in an Organized Health Care Education/Training Program in Washington, DC

Active since May 04, 2010PECOS EnrolledAccepts Medicare Assignment
900 23RD ST NW, WASHINGTON, DC 20037(202) 715-4000 Get Directions Write a Review

NPPES record last updated: February 4, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Justin Larkin M.d. NPPES

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

DR. JUSTIN LARKIN M.D. (NPI 1962729798) is an individual student in an organized health care education/training program in Washington, District Of Columbia and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2010).

NPPES Registry Identity

NPI1962729798
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameDR. JUSTIN LARKINCredential: M.D.
Location Address900 23RD ST NWWashington, DC 20037-2342
Mailing Address300 2nd Ave, Apartment #4163Needham, MA 02494-2833 · (510) 681-7007
Phone(202) 715-4000
Sole ProprietorYes
Medical School CMSGeorge Washington University School Of MedicineGraduated 2010
Enumeration DateMay 4, 2010
Last NPPES UpdateFebruary 4, 2022
✔ NPI 1962729798 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
900 23RD ST NW, Washington, DC 20037
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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

Dr. Justin Larkin M.d. 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 ID7214251412
PECOS Enrollment IDI20150116001504
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 Reassignment

Medicare enrollment records show Justin Larkin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc
2,377 mi
Internal Medicine
7373 WEST LANE
Stockton, CA 95210
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1548343510 (209) 476-2000

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

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.

DR. MUSTAFA BASSAM HAMMUDI MD
Internal Medicine
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 715-5109
DR. WILLIAM ANDREW HIATT MD
Student in an Organized Health Care Education/Training Program
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 741-3000
DR. SHANE ZAMANI MD
Anesthesiology
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 715-4750
MRS. KATHERINE CAROLINE FOX PA-C, MPH
Physician Assistant (Surgical)
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 715-5000
MICHAEL WILLIAM HELBIG MD
Student in an Organized Health Care Education/Training Program
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 741-3100
DR. AYAL ZEV PIERCE MD
Emergency Medicine
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 715-4000
CALLIE BEEGLE PA-C
Physician Assistant
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 715-4000
MEGAN KATHLEEN DAILEY PA-C
Physician Assistant
900 23RD ST NW
WASHINGTON, DC 20037
District of Columbia (202) 741-2210

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 Justin Larkin's NPI number?

The NPI number for Justin Larkin is 1962729798. It was assigned to this individual provider in the NPPES registry on May 4, 2010.

Where is Justin Larkin located?

Justin Larkin practices at 900 23rd St NW, Washington, DC 20037. The listed phone number is (202) 715-4000.

What is Justin Larkin's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Justin Larkin enrolled in Medicare?

Yes. Justin Larkin 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 organization bills Medicare for Justin Larkin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Justin Larkin reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, CA). The 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 Justin Larkin'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 Justin Larkin was last updated on February 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.