WILLIAM R HERZOG JR. MD
NPI 1902873979
Internal Medicine - Interventional Cardiology in Columbia, MD
About William R Herzog Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM R HERZOG JR. MD (NPI 1902873979) is an individual interventional cardiology provider in Columbia, Maryland, licensed in Maryland (D41959) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 7
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
William R Herzog Jr. Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Herzog reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hope Mills, NC 28348
- Reassigned Medicare billing, North Carolina enrollment
- 122 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
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 21044 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLUMBIA, MD 21044
COLUMBIA, MD 21044
CIOLUMBIA, MD 21044
COLUMBIA, MD 21044
COLUMBIA, MD 21044
COLUMBIA, MD 21044
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 Herzog's NPI number?
The NPI number for William Herzog is 1902873979. It was assigned to this individual provider in the NPPES registry on March 8, 2006.
Where is William Herzog located?
William Herzog practices at 10710 Charter Dr Suite 400, Columbia, MD 21044. The listed phone number is (410) 997-7979.
What is William Herzog's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is William Herzog enrolled in Medicare?
Yes. William Herzog is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Herzog's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Herzog reassigns Medicare benefits to Southeastern Regional Physician Services (Hope Mills, NC). 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 William Herzog's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Herzog accept?
Health plans from Cigna Healthcare list William Herzog 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 William Herzog was last updated on February 10, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# William R Herzog Jr., MD · NPI 1902873979
Interventional Cardiology physician in Columbia, Maryland. Individual provider, active in the CMS NPPES registry since March 8, 2006.
## Identity
- **NPI:** 1902873979 (Entity type: Individual)
- **Enumerated:** March 8, 2006
- **Primary specialty:** Internal Medicine - Interventional Cardiology · taxonomy 207RI0011X
- **State license:** D41959 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 10710 CHARTER DR, SUITE 400, Columbia, MD 21044-2858
- **Phone:** (410) 997-7979 · **Fax:** (410) 997-9231
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southeastern Regional Physician Services (NPI 1093389231, Hope Mills, NC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 10, 2017
- **Other identifiers:** Medicare UPIN E23087 (MD); Medicaid 543951500 (MD); Medicare PIN 131533YCQX (MD); and 4 more
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Source: [NPI Profile](https://npiprofile.com/npi/1902873979) · Data from the CMS NPPES public registry.