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DR. JUSTIN GREGORY PEACOCK M.D., PH.D.
NPI 1336563493
Radiology - Diagnostic Radiology in Bethesda, MD

Active since February 10, 2014PECOS Enrolled
8901 ROCKVILLE PIKE, BETHESDA, MD 20889(301) 295-9151 Get Directions Write a Review

NPPES record last updated: May 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 6, 2026, Jul 29, 2024, Jun 24, 2024 and 5 more (8 updates tracked since 2016).

About Dr. Justin Gregory Peacock M.d., Ph.d. NPPES

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

DR. JUSTIN GREGORY PEACOCK M.D., PH.D. (NPI 1336563493) is an individual diagnostic radiology provider in Bethesda, Maryland, licensed in Nebraska (28970) and active in the NPI registry since February 2014. He is enrolled in Medicare PECOS and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1336563493
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. JUSTIN GREGORY PEACOCKCredential: M.D., PH.D.
Location Address8901 ROCKVILLE PIKEBethesda, MD 20889-0001
Mailing Address8901 Rockville PikeBethesda, MD 20889-0001 · (301) 295-9151
Phone(301) 295-9151
Sole ProprietorNo
Enumeration DateFebruary 10, 2014
Last NPPES UpdateMay 6, 20268 updates tracked since enumeration
NPPES CertifiedMay 6, 2026
✔ NPI 1336563493 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses✔ Licensed in NE · 28970✔ Licensed in PA · MD485441
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Also ListedNuclear MedicineTaxonomy 207U00000X · License MD485441 (PA), 4301512179 (MI), 28970 (NE)
8901 ROCKVILLE PIKE, Bethesda, MD 20889
Open in Google Maps ↗

Secondary Practice Locations 4

Location 120 Expedition Trl Ste 103Gettysburg, PA 17325-8599 · Phone (717) 337-5991 · Fax (717) 337-5995
Location 23220 Discovery Dr Ste 100Lansing, MI 48910-8609 · Phone (517) 975-8930 · Fax (517) 337-4985
Location 34660 S Hagadorn Rd Ste 410East Lansing, MI 48823-6819 · Phone (517) 353-5053 · Fax (517) 884-7640
Location 44660 S Hagadorn Rd Ste 510East Lansing, MI 48823-6805 · Phone (517) 353-5053 · Fax (517) 884-7640

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Justin Gregory Peacock M.d., Ph.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.

Medicare Billing Reassignments

6

Medicare enrollment records show Justin Peacock reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Maryland Imaging Network PC
28 mi
Diagnostic Radiology
10400 ODONNELL PL STE 100
Waldorf, MD 20603
  • Reassigned Medicare billing, District of Columbia enrollment
  • 43 clinicians in this Medicare group
NPI 1952138117 (410) 298-0454
Chesapeake Urology Associates LLC
58 mi
Hematology & Oncology
20 EXPEDITION TRAIL, SUITE 101
Gettysburg, PA 17325
  • Reassigned Medicare billing, Pennsylvania enrollment
  • Medicare enrollment name: Satish A Shah MD PC
  • 27 clinicians in this Medicare group
NPI 1982734976 (717) 334-4033
Meadville Medical Center
243 mi
Multi-Specialty
751 LIBERTY ST
Meadville, PA 16335
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 48 clinicians in this Medicare group
NPI 1629633573 (814) 333-5081
Msu Health Care Inc
461 mi
Pediatrics
1600 W GRAND RIVER AVE STE 2
Okemos, MI 48864
  • Reassigned Medicare billing, Michigan enrollment
  • 365 clinicians in this Medicare group
NPI 1003441171 (517) 349-5796
Sonoran Radiology Ltd
1,970 mi
Vascular & Interventional Radiology
1400 S DOBSON RD
Mesa, AZ 85202
  • Reassigned Medicare billing, Arizona enrollment
  • 447 clinicians in this Medicare group
NPI 1033745708 (623) 299-8743
Southwest Diagnostic Imaging LLC
1,970 mi
Diagnostic Radiology
3501 N SCOTTSDALE ROAD, SUITE 130
Scottsdale, AZ 85251
  • Reassigned Medicare billing, Arizona enrollment
  • 156 clinicians in this Medicare group
NPI 1902896236 (480) 425-5078

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Nuclear medicine study from skull base to mid-thigh with ct scan 78815
A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.
15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20889 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
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
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 20

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

DR. LIESL SHOCKLEY GRENIER M.D.
Dermatology (Dermatopathology)
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
MEGAN JUDITH LENIHAN MD
Surgery (Vascular Surgery)
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4000
JOHNS HOPKINS UNIVERSITY
Internal Medicine (Endocrinology, Diabetes & Metabolism)
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 400-1382
NATASHA ANTONY MD
Obstetrics & Gynecology
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4600
MR. ANDREW JOSEPH ULLMANN JR. DO
Internal Medicine
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (908) 635-6978
BRYCE TANNER GARDNER DMD
Military Health Care Provider
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4340
PARESH RAM PATEL MD
Emergency Medicine
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (301) 295-4810
DR. BRADLEY ALLEN DENGLER M.D.
Neurological Surgery
8901 ROCKVILLE PIKE
BETHESDA, MD 20889
Montgomery County (610) 223-7261

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 Peacock's NPI number?

The NPI number for Justin Peacock is 1336563493. It was assigned to this individual provider in the NPPES registry on February 10, 2014.

Where is Justin Peacock located?

Justin Peacock practices at 8901 Rockville Pike, Bethesda, MD 20889. The listed phone number is (301) 295-9151.

What is Justin Peacock's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Justin Peacock enrolled in Medicare?

Yes. Justin Peacock is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Justin Peacock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Justin Peacock reassigns Medicare benefits to 6 organizations: Maryland Imaging Network PC (Waldorf, MD), Chesapeake Urology Associates LLC (Gettysburg, PA), Meadville Medical Center (Meadville, PA), Msu Health Care Inc (Okemos, MI), Sonoran Radiology Ltd (Mesa, AZ) and 1 more organization, listed in the Medicare section above. 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 Justin Peacock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Justin Peacock accept?

Health plans from Oscar Health Plan, Inc. list Justin Peacock 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 Justin Peacock was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.