HCPList Know more before you call. About

John Cho, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Gaithersburg, MD

Call (301) 315-3030 Directions

At a glance

820 W Diamond Ave Ste 600, Gaithersburg, MD 20878-1469

NPPES record updated Aug 20, 2025. Public records can lag behind changes at a practice.

Before you call: a quick checklist
  • Are you accepting new patients?
  • Do you accept my specific insurance plan?
  • Do you provide the service I need at this address?
  • Do I need a referral, and what is the earliest appointment?

Insurance participation and appointment availability are not established by these public records.

Medicare & insurance

Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.

How to check your coverage

Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.

Check the official Medicare directory ↗

Practice location

820 W Diamond Ave Ste 600
Gaithersburg, MD 20878-1469

Additional reported practice locations

1304 Fawcett Ave Ste 100
Tacoma, WA 984021900
Phone: 2537614200
REPORTED BACKGROUND

Education & affiliations

Medical / professional school
Not reported in this file
Graduation year
2010
CMS specialties
Diagnostic Radiology · Interventional Radiology

Practice groups

Reported hospital affiliations

Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.

Source: CMS National Downloadable File · Published Oct 15, 2026.

Source: CMS Facility Affiliation Data · Published Oct 15, 2026.

Advertisement
Advertising spaceAdvertisements are separate from provider records.
PUBLISHED MEDICARE ACTIVITY

Procedures in the public data

Reported activity can help you ask more informed questions about a practice’s services.

No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.

CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology

Source: CMS Utilization Data · Published Oct 15, 2026.

Find providers with a similar service mix

Compare 2024 published Medicare activity in the same reported specialty, here or in another city.

Explore similar providers →
PAYMENT TRANSPARENCY

Industry-reported general payments

No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.

Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.

Professional details: NPI, taxonomy & registry record
NPI1114245990
Call Directions

Registry details

Primary taxonomy
Diagnostic Radiology · Interventional Radiology (CMS)
Taxonomy code
2085R0202X
Enumeration date
May 4, 2010
Record updated
Aug 20, 2025
More registry details
Provider type
Individual · Type 1
Reported credentials
MD

Reported taxonomies and licenses

Specialty details in registry

2085R0204X

License reported: D83358 MD

Specialty details in registry

2085R0204X

License reported: 27788 NV

Specialty details in registry

2085R0202X · Primary

License reported: MD70016363 WA

License numbers and credentials are reported to NPPES; HCPList does not independently verify them.

Practice location

820 W Diamond Ave Ste 600
Gaithersburg, MD 20878-1469
Phone
(301) 315-3030
Mailing address
11344 EMERALD PARK RD

POTOMAC, MD 208541163
Source: NPPES Source through Oct 18, 2026An NPI does not verify licensure or credentials.

Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.

Report a directory issue