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DR. ALEX SHERWOOD MILLER M.D.
NPI 1336490648
Obstetrics & Gynecology - Maternal & Fetal Medicine in Winchester, VA

Active since September 26, 2012PECOS EnrolledAccepts Medicare Assignment
1870 AMHERST ST STE 3A, WINCHESTER, VA 22601(540) 536-3228(540) 536-3227 Get Directions Write a Review

NPPES record last updated: September 9, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 9, 2025, Nov 22, 2023, Nov 8, 2019 and 2 more (5 updates tracked since 2017).

About Dr. Alex Sherwood Miller M.d. NPPES

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

DR. ALEX SHERWOOD MILLER M.D. (NPI 1336490648) is an individual maternal & fetal medicine provider in Winchester, Virginia, licensed in Virginia (0101283754) and active in the NPI registry since September 2012. She is enrolled in Medicare PECOS, is affiliated with Winchester Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1336490648
Entity TypeIndividualFemale
Primary Taxonomy207VM0101X
Provider Legal NameDR. ALEX SHERWOOD MILLERCredential: M.D.
Location Address1870 AMHERST ST STE 3AWinchester, VA 22601-2841
Mailing Address220 Campus Blvd Ste 320Winchester, VA 22601-2889 · (540) 536-5100 · Fax (540) 536-0235
Phone(540) 536-3228
Fax(540) 536-3227
Sole ProprietorNo
Medical School CMSVirginia Commonwealth University, School Of MedicineGraduated 2012
Enumeration DateSeptember 26, 2012
Last NPPES UpdateSeptember 9, 20255 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2025
✔ NPI 1336490648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in VA · 0101283754
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
1870 AMHERST ST STE 3A, Winchester, VA 22601
Open in Google Maps ↗

Secondary Practice Locations 3

Location 1120 N Commerce Ave Ste 230Front Royal, VA 22630-2672 · Phone (540) 635-0800 · Fax (540) 635-0801
Location 2759 S Main StWoodstock, VA 22664-1154 · Phone (540) 459-1383 · Fax (540) 459-1382
Location 31840 Amherst StWinchester, VA 22601-2808 · Phone (540) 536-8000 · Fax (540) 536-7780

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

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. Alex Sherwood Miller 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.

PECOS PAC ID1153686118
PECOS Enrollment IDI20250424000269
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

4

Medicare enrollment records show Alex Miller reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Winchester Medical Center
Same address
Obstetrics & Gynecology
1870 AMHERST ST STE 2E
Winchester, VA 22601
  • Reassigned Medicare billing, Virginia enrollment
  • 756 clinicians in this Medicare group
NPI 1467218909 (540) 667-4546
Shenandoah Memorial Hospital, Inc.
15 mi
Family Medicine
33699 OLD VALLEY PIKE STE D
Strasburg, VA 22657
  • Reassigned Medicare billing, Virginia enrollment
  • 416 clinicians in this Medicare group
NPI 1710494331 (540) 459-1410
Warren Memorial Hospital, Inc.
16 mi
Rural Health
67 RIVERTON COMMONS DR
Front Royal, VA 22630
  • Reassigned Medicare billing, Virginia enrollment
  • 367 clinicians in this Medicare group
NPI 1417447871 (540) 635-0848
Yale University
314 mi
Advanced Practice Midwife
100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 3,728 clinicians in this Medicare group
NPI 1124148887 (203) 737-5432

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Winchester Medical Center

Acute Care Hospitals · Winchester, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490005
Location1840 Amherst StWinchester, VA 22601 · Winchester City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22601 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
$129.04 typical visit price
range $56.19 – $170.30
Typical copayment $32.26 (range $14.04 – $42.57)
Most-billed visit code 99204
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 5

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

DR. VIVEK KUMAR GUPTA MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1870 AMHERST ST STE 3A
WINCHESTER, VA 22601
Winchester City (540) 536-3228
DR. MASARU NEGI M.D.
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1870 AMHERST ST STE 3A
WINCHESTER, VA 22601
Winchester City (540) 536-3228
M CATHLEEN MCCOY MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1870 AMHERST ST STE 3A
WINCHESTER, VA 22601
Winchester City (540) 536-3228
GABRIELA SLIZEWSKA LCGC
Genetic Counselor, MS
1870 AMHERST ST STE 3A
WINCHESTER, VA 22601
Winchester City (540) 536-3228
KAITLIN MADELINE SULLIVAN CGC
Genetic Counselor, MS
1870 AMHERST ST STE 3A
WINCHESTER, VA 22601
Winchester City (540) 536-3228

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 Alex Miller's NPI number?

The NPI number for Alex Miller is 1336490648. It was assigned to this individual provider in the NPPES registry on September 26, 2012.

Where is Alex Miller located?

Alex Miller practices at 1870 Amherst St Ste 3A, Winchester, VA 22601. The listed phone number is (540) 536-3228.

What is Alex Miller's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Alex Miller enrolled in Medicare?

Yes. Alex Miller 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 Alex Miller's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alex Miller reassigns Medicare benefits to 4 organizations: Winchester Medical Center (Winchester, VA), Shenandoah Memorial Hospital, Inc. (Strasburg, VA), Warren Memorial Hospital, Inc. (Front Royal, VA) and Yale University (New Haven, CT). 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 Alex Miller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alex Miller accept?

Health plans from CareSource list Alex Miller 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.

Is Alex Miller affiliated with any hospitals?

According to CMS data, Alex Miller is affiliated with Winchester Medical Center.

When was this NPI record last updated?

The NPPES record for Alex Miller was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.