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WILLIAM RONALD GAERTNER M.D
NPI 1649267188
Psychiatry & Neurology - Psychiatry in Fredericksburg, VA

Active since September 30, 2005PECOS Enrolled
621 JEFFERSON DAVIS HWY, SUITE 201, FREDERICKSBURG, VA 22401(540) 372-2028(540) 372-6541 Get Directions Write a Review

NPPES record last updated: May 25, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 25, 2022, Oct 24, 2018 (2 updates tracked since 2018).

About William Ronald Gaertner M.d NPPES

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

WILLIAM RONALD GAERTNER M.D (NPI 1649267188) is an individual psychiatry provider in Fredericksburg, Virginia, licensed in Virginia (0101035045) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1649267188
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameWILLIAM RONALD GAERTNERCredential: M.D
Location Address621 JEFFERSON DAVIS HWY, SUITE 201Fredericksburg, VA 22401
Mailing Address621 Emancipation Hwy Ste 201Fredericksburg, VA 22401-4567 · (540) 372-2028 · Fax (540) 372-6541
Phone(540) 372-2028
Fax(540) 372-6541
Sole ProprietorNo
Enumeration DateSeptember 30, 2005
Last NPPES UpdateMay 25, 20222 updates tracked since enumeration
NPPES CertifiedMay 25, 2022
✔ NPI 1649267188 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in VA · 0101035045
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedPsychiatry & Neurology · Addiction MedicineTaxonomy 2084A0401X · License 0101035045 (VA)
Also ListedPsychiatry & Neurology · Geriatric PsychiatryTaxonomy 2084P0805X · License 0101035045 (VA)
621 JEFFERSON DAVIS HWY, Fredericksburg, VA 22401
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Other Identifiers 9

Other146004Anthem
Other347Value Options
Medicaid071985427VA
Other458104000Magellan
Other51337Cigna
Other081522Optima
Other861112647Ubh
Other4076171Aetna
Other307350Anthem

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Ronald Gaertner M.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

2

Medicare enrollment records show William Gaertner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mary Washington Healthcare Physicians
0.3 mi
Family Medicine
1001 SAM PERRY BLVD
Fredericksburg, VA 22401
  • Reassigned Medicare billing, Virginia enrollment
  • 547 clinicians in this Medicare group
NPI 1295999852 (540) 741-1100
Mary Washington Hospital, Inc.
0.3 mi
Cardiovascular Disease
1001 SAM PERRY BLVD
Fredericksburg, VA 22401
  • Reassigned Medicare billing, Virginia enrollment
  • 133 clinicians in this Medicare group
NPI 1013089879 (540) 741-1041

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 22401 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
$170.30 typical visit price
range $56.19 – $170.30
Typical copayment $42.57 (range $14.04 – $42.57)
Most-billed visit code 99205
Established Patient
$70.08 typical visit price
range $18.07 – $138.91
Typical copayment $17.52 (range $4.51 – $34.72)
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 4

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

SYED AHMED M.D.
Psychiatry & Neurology (Psychiatry)
621 JEFFERSON DAVIS HWY, SUITE A
FREDERICKSBURG, VA 22401
Fredericksburg City (540) 899-7766
FREDERICKSBURG OBGYN CENTER INC
Obstetrics & Gynecology
621 JEFFERSON DAVIS HWY, SUITE 201
FREDERICKSBURG, VA 22401
Fredericksburg City (540) 371-6331
DR. MELVILLE GARLAND WRIGHT III MD
Specialist
621 JEFFERSON DAVIS HWY
FREDERICKSBURG, VA 22401
Fredericksburg City (540) 373-2922
DR. C. EDWARD ROYSTER MD
Obstetrics & Gynecology
621 JEFFERSON DAVIS HWY, SUITE 201
FREDERICKSBURG, VA 22401
Fredericksburg City (540) 371-6330

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 William Gaertner's NPI number?

The NPI number for William Gaertner is 1649267188. It was assigned to this individual provider in the NPPES registry on September 30, 2005.

Where is William Gaertner located?

William Gaertner practices at 621 Jefferson Davis Hwy Suite 201, Fredericksburg, VA 22401. The listed phone number is (540) 372-2028.

What is William Gaertner's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is William Gaertner enrolled in Medicare?

Yes. William Gaertner is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for William Gaertner's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Gaertner reassigns Medicare benefits to 2 organizations: Mary Washington Healthcare Physicians (Fredericksburg, VA) and Mary Washington Hospital, Inc. (Fredericksburg, VA). 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 William Gaertner'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 William Gaertner was last updated on May 25, 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.