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CARSON HERSCHEL KATZIN MERENBLOOM MD, MPH
NPI 1447952866
Internal Medicine in Winchester, VA

Active since March 20, 2023PECOS Enrolled
1440 AMHERST ST, WINCHESTER, VA 22601(154) 053-6051 Get Directions Write a Review

NPPES record last updated: July 24, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 24, 2026, Jun 19, 2023, Mar 20, 2023 (3 updates tracked since 2023).

About Carson Herschel Katzin Merenbloom Md, Mph NPPES

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

CARSON HERSCHEL KATZIN MERENBLOOM MD, MPH (NPI 1447952866) is an individual internal medicine provider in Winchester, Virginia, licensed in Virginia (0101289470) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1447952866
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameCARSON HERSCHEL KATZIN MERENBLOOMCredential: MD, MPH
Location Address1440 AMHERST STWinchester, VA 22601-3010
Mailing Address1440 Amherst StWinchester, VA 22601-3010
Phone(154) 053-6051
Sole ProprietorNo
Enumeration DateMarch 20, 2023
Last NPPES UpdateJuly 24, 20263 updates tracked since enumeration
NPPES CertifiedJuly 24, 2026
✔ NPI 1447952866 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in VA · 0101289470
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1440 AMHERST ST, Winchester, VA 22601
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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 (PECOS)

Carson Herschel Katzin Merenbloom Md, Mph 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 Carson Merenbloom reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Winchester Medical Center
Same address
Family Medicine
1440 AMHERST ST
Winchester, VA 22601
  • Reassigned Medicare billing, Virginia enrollment
  • 756 clinicians in this Medicare group
NPI 1497691521 (540) 536-0518

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 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
$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.

KAITLYN GARNETT PA
Physician Assistant
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 536-5400
STEPHANIE ANNE HOEFLE MD
Family Medicine
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 536-5400
WINCHESTER FAMILY PRACTICE PC
Family Medicine
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 450-3339
MRS. LINDSEY ANN SPISHAK LCSW
Social Worker (Clinical)
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 536-0518
CAROLYN KAY WILLIAMS FNP-BC
Nurse Practitioner (Family)
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 536-5400
WINCHESTER MEDICAL CENTER
Family Medicine
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 536-0518
SHYAMA ROSENFELD MD
Family Medicine
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 450-3339
MS. CYNTHIA STEINKAMP PA-C
Physician Assistant (Medical)
1440 AMHERST ST
WINCHESTER, VA 22601
Winchester City (540) 536-5400

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 Carson Merenbloom's NPI number?

The NPI number for Carson Merenbloom is 1447952866. It was assigned to this individual provider in the NPPES registry on March 20, 2023.

Where is Carson Merenbloom located?

Carson Merenbloom practices at 1440 Amherst St, Winchester, VA 22601. The listed phone number is (154) 053-6051.

What is Carson Merenbloom's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Carson Merenbloom enrolled in Medicare?

Yes. Carson Merenbloom is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Carson Merenbloom's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carson Merenbloom reassigns Medicare benefits to Winchester Medical Center (Winchester, VA). The 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 Carson Merenbloom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Carson Merenbloom accept?

Health plans from CareSource list Carson Merenbloom 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.

When was this NPI record last updated?

The NPPES record for Carson Merenbloom was last updated on July 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.