DR. JOHN H SEOK M.D.
NPI 1770578973
Psychiatry & Neurology - Neurology in Vienna, VA
About Dr. John H Seok M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN H SEOK M.D. (NPI 1770578973) is an individual neurology provider in Vienna, Virginia, licensed in Pennsylvania (MD472434) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of State University Of Ny Upstate Medical University (2001).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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. John H Seok 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.
Medicare Billing Reassignments
7Medicare enrollment records show John Seok reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Waldorf, MD 20602
- Reassigned Medicare billing, Maryland enrollment
- 4 clinicians in this Medicare group
Fredericksburg, VA 22401
- Reassigned Medicare billing, Virginia enrollment
- 547 clinicians in this Medicare group
Mifflin, PA 17058
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 clinicians in this Medicare group
Altoona, PA 16602
- Reassigned Medicare billing, Pennsylvania enrollment
- 338 clinicians in this Medicare group
State College, PA 16803
- Reassigned Medicare billing, Pennsylvania enrollment
- 393 clinicians in this Medicare group
Ligonier, PA 15658
- Reassigned Medicare billing, Pennsylvania enrollment
- 669 clinicians in this Medicare group
Salt Lake City, UT 84124
- Reassigned Medicare billing, Idaho enrollment
- Medicare enrollment name: St Marks Professional Services LLC
- 21 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.
Areas of Expertise CMS Part B claims 5
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22182 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 John Seok's NPI number?
The NPI number for John Seok is 1770578973. It was assigned to this individual provider in the NPPES registry on September 14, 2005.
Where is John Seok located?
John Seok practices at 2106 Gallows Rd Ste F, Vienna, VA 22182. The listed phone number is (038) 283-3737.
What is John Seok's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is John Seok enrolled in Medicare?
Yes. John Seok 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 John Seok's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Seok reassigns Medicare benefits to 7 organizations: C C Neurology LLC (Waldorf, MD), Mary Washington Healthcare Physicians (Fredericksburg, VA), Geisinger Clinic (Mifflin, PA), Upmc Altoona Regional Health Services, Inc (Altoona, PA), Mount Nittany Medical Center Health Services Inc (State College, PA) and 2 more organizations, 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 John Seok'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 John Seok was last updated on August 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. John H Seok, M.D. · NPI 1770578973
Neurology physician in Vienna, Virginia. Individual provider, active in the CMS NPPES registry since September 14, 2005.
## Identity
- **NPI:** 1770578973 (Entity type: Individual)
- **Enumerated:** September 14, 2005
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** MD472434 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 2106 GALLOWS RD STE F, Vienna, VA 22182-3961
- **Phone:** (038) 283-3737 · **Fax:** (703) 828-0227
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): C C Neurology LLC (NPI 1750158374, Waldorf, MD); Mary Washington Healthcare Physicians (NPI 1295999852, Fredericksburg, VA); Geisinger Clinic (NPI 1255382651, Mifflin, PA); Upmc Altoona Regional Health Services, Inc (NPI 1396724217, Altoona, PA); Mount Nittany Medical Center Health Services Inc (NPI 1598992554, State College, PA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of Ny Upstate Medical University, class of 2001
## Record status
- **NPPES last updated:** August 15, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1770578973) · Data from the CMS NPPES public registry.