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ANNA SULLIVAN OVERBY
NPI 1285073395
Internal Medicine in Winston Salem, NC

Active since June 21, 2013PECOS EnrolledAccepts Medicare Assignment
3333 SILAS CREEK PKWY, WINSTON SALEM, NC 27103(336) 718-7080(336) 718-9622 Get Directions Write a Review

NPPES record last updated: October 25, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 25, 2020, Sep 20, 2016 (2 updates tracked since 2016).

About Anna Sullivan Overby NPPES

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

ANNA SULLIVAN OVERBY (NPI 1285073395) is an individual internal medicine provider in Winston Salem, North Carolina, licensed in North Carolina (2016-00984) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, is affiliated with Memorial Mission Hospital And Asheville Surgery Ce, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1285073395
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameANNA SULLIVAN OVERBY
Location Address3333 SILAS CREEK PKWYWinston Salem, NC 27103-3013
Mailing AddressPo Box 60447Charlotte, NC 28260-0447 · (336) 718-7080 · Fax (336) 718-9622
Phone(336) 718-7080
Fax(336) 718-9622
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateJune 21, 2013
Last NPPES UpdateOctober 25, 20202 updates tracked since enumeration
NPPES CertifiedSeptember 6, 2020
✔ NPI 1285073395 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in NC · 2016-00984✔ Licensed in VA · 0116026109
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.
3333 SILAS CREEK PKWY, Winston Salem, NC 27103
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Oscar Health Plan of North Carolina, Inc.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

Anna Sullivan Overby 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 ID2961708995
PECOS Enrollment IDI20161116001390
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 Anna Overby reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fletcher Hospital Inc
121 mi
Sports Medicine
89 W MILLS ST STE A
Columbus, NC 28722
  • Reassigned Medicare billing, North Carolina enrollment
  • 349 clinicians in this Medicare group
NPI 1902634231 (828) 894-3718
Henderson County Hospital Corporation
132 mi
Federally Qualified Health Center (FQHC)
2775 HENDERSONVILLE RD
Arden, NC 28704
  • Reassigned Medicare billing, North Carolina enrollment
  • 401 clinicians in this Medicare group
NPI 1619606316 (828) 694-8900

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 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
223 services118 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
195 services100 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
160 services156 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
64 services63 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
11 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Memorial Mission Hospital And Asheville Surgery Ce

Acute Care Hospitals · Asheville, NC
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number340002
Location509 Biltmore AveAsheville, NC 28801 · Buncombe County
Emergency services Birthing friendly

Adventhealth Hendersonville

Acute Care Hospitals · Hendersonville, NC
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number340023
Location100 Hospital DriveHendersonville, NC 28792 · Henderson County
Emergency services Birthing friendly

St Lukes Hospital

Critical Access Hospitals · Columbus, NC
OwnershipVoluntary non-profit - Private
CMS Certification Number341322
Location101 Hospital DriveColumbus, NC 28722 · Polk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 27103 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
$125.01 typical visit price
range $54.12 – $165.09
Typical copayment $31.25 (range $13.53 – $41.27)
Most-billed visit code 99204
Established Patient
$95.94 typical visit price
range $17.21 – $134.61
Typical copayment $23.98 (range $4.30 – $33.65)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Standard wheelchair K0001
DME-Wheelchairs · category DD000N
1 supplier12 claims12 services$11.10 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

DR. DEEPAK S NAIR M.D.
Psychiatry & Neurology (Neurology)
3333 SILAS CREEK PKWY
WINSTON SALEM, NC 27103
Forsyth County (336) 718-7224
BROOKE WILLIAMS DO
Hospitalist
3333 SILAS CREEK PKWY
WINSTON SALEM, NC 27103
Forsyth County (336) 718-8383
BONNIE LYNN GAUDIN PA
Physician Assistant (Medical)
3333 SILAS CREEK PKWY, EMERGENCY DEPARTMENT
WINSTON SALEM, NC 27103
Forsyth County (336) 275-3325
RALPH DENTON UPDYKE JR. PA
Physician Assistant
3333 SILAS CREEK PKWY
WINSTON SALEM, NC 27103
Forsyth County (336) 718-7041
DR. DENNIS WARREN ROSS MD
Pathology (Hematology)
3333 SILAS CREEK PKWY
WINSTON-SALEM, NC 27103
Forsyth County (336) 718-3737
MR. KYLE TIMOTHY ROBERTS PA
Physician Assistant
3333 SILAS CREEK PKWY
WINSTON SALEM, NC 27103
Forsyth County (336) 718-7080
JUAN CARLOS VARELA M.D., PHD
Internal Medicine (Hematology)
3333 SILAS CREEK PKWY
WINSTON SALEM, NC 27103
Forsyth County (336) 718-5570
DR. MARIE HUFFMASTER THOMAS FNP-C
Nurse Practitioner (Family)
3333 SILAS CREEK PKWY
WINSTON SALEM, NC 27103
Forsyth County (336) 718-5000

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 Anna Overby's NPI number?

The NPI number for Anna Overby is 1285073395. It was assigned to this individual provider in the NPPES registry on June 21, 2013.

Where is Anna Overby located?

Anna Overby practices at 3333 Silas Creek Pkwy, Winston Salem, NC 27103. The listed phone number is (336) 718-7080.

What is Anna Overby's specialty?

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

Is Anna Overby enrolled in Medicare?

Yes. Anna Overby 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 Anna Overby's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Overby reassigns Medicare benefits to 2 organizations: Fletcher Hospital Inc (Columbus, NC) and Henderson County Hospital Corporation (Arden, NC). 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 Anna Overby's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anna Overby accept?

Health plans from Cigna Healthcare and Oscar Health Plan of North Carolina, Inc list Anna Overby 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 Anna Overby affiliated with any hospitals?

According to CMS data, Anna Overby is affiliated with Memorial Mission Hospital And Asheville Surgery Ce, Adventhealth Hendersonville and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Anna Overby was last updated on October 25, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.