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DR. KAREN H. HALLMARK M.D.
NPI 1982617650
Obstetrics & Gynecology in Mt Pleasant, SC

Active since August 14, 2006PECOS Enrolled
3510 N HIGHWAY 17 STE 225, MT PLEASANT, SC 29466(843) 884-0301(843) 606-8036 Get Directions Write a Review

NPPES record last updated: October 29, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Karen H. Hallmark M.d. NPPES

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

DR. KAREN H. HALLMARK M.D. (NPI 1982617650) is an individual obstetrics & gynecology provider in Mt Pleasant, South Carolina, licensed in South Carolina (20832) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1982617650
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. KAREN H. HALLMARKCredential: M.D.
Location Address3510 N HIGHWAY 17 STE 225Mt Pleasant, SC 29466-8233
Mailing AddressPo Box 751649Charlotte, NC 28275-1649 · (843) 789-1620 · Fax (843) 724-2440
Phone(843) 884-0301
Fax(843) 606-8036
Sole ProprietorNo
Enumeration DateAugust 14, 2006
Last NPPES UpdateOctober 29, 2020
NPPES CertifiedOctober 29, 2020
✔ NPI 1982617650 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in SC · 20832
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedSpecialistTaxonomy 174400000X · License 20832 (SC)
3510 N HIGHWAY 17 STE 225, Mt Pleasant, SC 29466
Open in Google Maps ↗

Other Identifiers 2

OtherP00886825SC · Railroad Mc Id-rsfpn
Medicaid748981SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include First Choice Next.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Karen H. Hallmark 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

3

Medicare enrollment records show Karen Hallmark reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Roper Saint Francis Physicians Network
Same address
Neurological Surgery
3510 N HIGHWAY 17 STE 315
Mt Pleasant, SC 29466
  • Reassigned Medicare billing, South Carolina enrollment
  • 658 clinicians in this Medicare group
NPI 1033956065 (843) 723-8823
Roper St. Francis Specialty Physicians
21 mi
Surgery
8536 PALMETTO COMMERCE PKWY STE 501
Ladson, SC 29456
  • Reassigned Medicare billing, South Carolina enrollment
  • 296 clinicians in this Medicare group
NPI 1528945912 (843) 203-2260
Obhg South Carolina PC
202 mi
Obstetrics & Gynecology
777 LOWNDES HILL RD BLDG 1
Greenville, SC 29607
  • Reassigned Medicare billing, South Carolina enrollment
  • 190 clinicians in this Medicare group
NPI 1538457361 (800) 967-2289

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 29466 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
$124.04 typical visit price
range $53.57 – $163.84
Typical copayment $31.01 (range $13.39 – $40.96)
Most-billed visit code 99204
Established Patient
$67.12 typical visit price
range $16.96 – $133.52
Typical copayment $16.78 (range $4.24 – $33.38)
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 6

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

ROPER SAINT FRANCIS PHYSICIANS NETWORK
Surgery (Plastic and Reconstructive Surgery)
3510 N HIGHWAY 17 STE 225
MT PLEASANT, SC 29466
Charleston County (843) 402-1766
DR. PHYLLIS W. ROGERSON M.D.
Obstetrics & Gynecology
3510 N HIGHWAY 17 STE 225
MT PLEASANT, SC 29466
Charleston County (843) 884-0301
AUDREY ROWEN WHITE PA-C
Physician Assistant (Surgical)
3510 N HIGHWAY 17 STE 225
MOUNT PLEASANT, SC 29466
Charleston County (843) 402-1766
DR. SUSANNE M. BRADFORD M.D.
Obstetrics & Gynecology
3510 N HIGHWAY 17 STE 225
MT PLEASANT, SC 29466
Charleston County (843) 884-0301
ROPER SAINT FRANCIS PHYSICIANS NETWORK
Internal Medicine (Hematology & Oncology)
3510 N HIGHWAY 17 STE 225
MOUNT PLEASANT, SC 29466
Charleston County (843) 881-5844
ROPER SAINT FRANCIS PHYSICIANS NETWORK
Obstetrics & Gynecology
3510 N HIGHWAY 17 STE 225
MT PLEASANT, SC 29466
Charleston County (843) 884-0301

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 Karen Hallmark's NPI number?

The NPI number for Karen Hallmark is 1982617650. It was assigned to this individual provider in the NPPES registry on August 14, 2006.

Where is Karen Hallmark located?

Karen Hallmark practices at 3510 N Highway 17 Ste 225, Mt Pleasant, SC 29466. The listed phone number is (843) 884-0301.

What is Karen Hallmark's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Karen Hallmark enrolled in Medicare?

Yes. Karen Hallmark is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Karen Hallmark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Hallmark reassigns Medicare benefits to 3 organizations: Roper Saint Francis Physicians Network (Mt Pleasant, SC), Roper St. Francis Specialty Physicians (Ladson, SC) and Obhg South Carolina PC (Greenville, SC). 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 Karen Hallmark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Hallmark accept?

Health plans from First Choice Next list Karen Hallmark 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 Karen Hallmark was last updated on October 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.