JOSIAH AN M.D.
NPI 1053791517
Internal Medicine - Hematology & Oncology in Winston Salem, NC

Q: What is Josiah An's NPI number?

The NPI number for Josiah An is 1053791517. It was assigned to this individual provider in the NPPES registry on May 31, 2015.

Q: What is Josiah An's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Josiah An was last updated on December 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.

Active since May 31, 2015PECOS EnrolledAccepts Medicare Assignment

3333 SILAS CREEK PKWY, WINSTON SALEM, NC 27103(336) 277-8800(336) 277-8850 Get Directions Write a Review

NPPES record last updated: December 17, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Dec 17, 2025, May 8, 2024, Apr 22, 2022 and 2 more (5 updates tracked since 2021).

On this page

About Josiah An M.d. NPPES

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

JOSIAH AN M.D. (NPI 1053791517) is an individual hematology & oncology provider in Winston Salem, North Carolina, licensed in North Carolina (2021-01298) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Southern Illinois University School Of Medicine (2015).

NPPES Registry Identity

NPI1053791517

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameJOSIAH ANCredential: M.D.

Location Address3333 SILAS CREEK PKWYWinston Salem, NC 27103-3013

Mailing AddressPo Box 60516Charlotte, NC 28260-0516

Phone(336) 277-8800

Fax(336) 277-8850

Sole ProprietorNo

Medical School CMSSouthern Illinois University School Of MedicineGraduated 2015

Enumeration DateMay 31, 2015

Last NPPES UpdateDecember 17, 20255 updates tracked since enumeration

NPPES CertifiedDecember 17, 2025

✔ NPI 1053791517 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

Licenses✔ Licensed in NC · 2021-01298✔ Licensed in IA · R10218✔ Licensed in WA · MD70049970

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal MedicineTaxonomy 207R00000X · License R10218 (IA)

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License R10218 (IA)

Also ListedInternal Medicine · GastroenterologyTaxonomy 207RG0100X · License R10218 (IA)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License R10218 (IA)

3333 SILAS CREEK PKWY, Winston Salem, NC 27103

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Secondary Practice Locations 2

Location 1200 Hawkins Dr, Dept of Internal MedicineIowa City, IA 52242-1009 · Phone (319) 384-9668 · Fax (319) 384-8955

Location 2201 16th Ave ESeattle, WA 98112-5226 · Phone (206) 326-3111 · Fax (877) 515-2975

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Josiah An 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 ID6406168145

PECOS Enrollment IDI20240402001541

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.

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.

Infusion, normal saline solution , 1000 cc J7030

An infusion of normal saline solution, 1000 cc, is a common medical procedure. It involves introducing a saltwater solution into your bloodstream via an intravenous (IV) line. This helps to hydrate your body, correct electrolyte imbalances, and deliver medications if needed.

24 services15 patients

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

$165.09 typical visit price

range $54.12 – $165.09

Typical copayment $41.27 (range $13.53 – $41.27)

Most-billed visit code 99205

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.

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 Josiah An's NPI number?

The NPI number for Josiah An is 1053791517. It was assigned to this individual provider in the NPPES registry on May 31, 2015.

Where is Josiah An located?

Josiah An practices at 3333 Silas Creek Pkwy, Winston Salem, NC 27103. The listed phone number is (336) 277-8800.

What is Josiah An's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Josiah An enrolled in Medicare?

Yes. Josiah An 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.

When was this NPI record last updated?

The NPPES record for Josiah An was last updated on December 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.