MICHAEL GRILLON MD
NPI 1639178122
Family Medicine in Onancock, VA

Q: What is Michael Grillon's NPI number?

The NPI number for Michael Grillon is 1639178122. It was assigned to this individual provider in the NPPES registry on July 18, 2005.

Q: What is Michael Grillon's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Michael Grillon was last updated on November 11, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since July 18, 2005PECOS Enrolled

20486 MARKET STREET, ONANCOCK, VA 23417(757) 302-2700(757) 787-9262 Get Directions Write a Review

NPPES record last updated: November 11, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 11, 2019, Feb 28, 2019 (2 updates tracked since 2019).

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About Michael Grillon Md NPPES

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

MICHAEL GRILLON MD (NPI 1639178122) is an individual family medicine provider in Onancock, Virginia, licensed in Virginia (0101055534) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Mechanicsville.

NPPES Registry Identity

NPI1639178122

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameMICHAEL GRILLONCredential: MD

Location Address20486 MARKET STREETOnancock, VA 23417

Mailing Address8262 Atlee Rd, Suite 205Mechanicsville, VA 23116-1816 · (804) 559-0194 · Fax (804) 559-0198

Phone(757) 302-2700

Fax(757) 787-9262

Sole ProprietorNo

Enumeration DateJuly 18, 2005

Last NPPES UpdateNovember 11, 20192 updates tracked since enumeration

✔ NPI 1639178122 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in VA · 0101055534

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Also ListedSurgeryTaxonomy 208600000X · License 0101055534 (VA)

20486 MARKET STREET, Onancock, VA 23417

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Secondary Practice Location 1

Location 18262 Atlee Rd, Suite 205Mechanicsville, VA 23116-1816 · Phone (804) 559-0194 · Fax (804) 559-0198

Other Identifiers 10

Medicaid3810012912WV

Medicaid790577TNC

OtherC06115VA · Group Ptan

Other2132448VA · Mamsi

Medicaid1639178122VA

Other5472512VA · Aetna

Other020002600VA · Black Lung

Other1073988WV · Brickstreet-wv Comp

Other1373138VA · Cigna

Other178223VA · Bcbs

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michael Grillon Md 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 Reassignment

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

Vohra Wound Physicians Of Fl, LLC

102 mi

Family Medicine

3900 WESTERRE PKWY
Richmond, VA 23233

Reassigned Medicare billing, District of Columbia and Virginia enrollments
40 clinicians in this Medicare group

NPI 1205130911 (877) 866-7123

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23417 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

$86.88 typical visit price

range $56.19 – $170.30

Typical copayment $21.72 (range $14.04 – $42.57)

Most-billed visit code 99203

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

Most-billed visit code 99214

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 12

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

THOMAS FISHER HARE RPA-C

Physician Assistant