1. Home
  2. Directory
  3. Virginia
  4. Charlottesville
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GREGORY K, HONG M.D., PH.D.
NPI 1386847093
Internal Medicine - Endocrinology, Diabetes & Metabolism in Charlottesville, VA

Active since June 08, 2007PECOS EnrolledAccepts Medicare Assignment
79.39/100
CMS Quality Rating
415 RAY C. HUNT DR, CHARLOTTESVILLE, VA 22903(434) 924-1825(434) 244-9456 Get Directions Write a Review

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

Record update history: Sep 29, 2026, Aug 10, 2023, Oct 20, 2020 (3 updates tracked since 2020).

About Gregory K, Hong M.d., Ph.d. NPPES

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

GREGORY K, HONG M.D., PH.D. (NPI 1386847093) is an individual endocrinology, diabetes & metabolism provider in Charlottesville, Virginia, licensed in Virginia (0101253781) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Virginia Medical Center, and maintains a secondary practice location in Charlottesville.

NPPES Registry Identity

NPI1386847093
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameGREGORY K, HONGCredential: M.D., PH.D.
Location Address415 RAY C. HUNT DRCharlottesville, VA 22903-0001
Mailing AddressPo Box 749112Atlanta, GA 30374-9112
Phone(434) 924-1825
Fax(434) 244-9456
Sole ProprietorNo
Medical School CMSNorth Carolina Medical SchoolGraduated 2001
Enumeration DateJune 8, 2007
Last NPPES UpdateSeptember 29, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 29, 2026
✔ NPI 1386847093 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in VA · 0101253781
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 0116019219 (VA)
415 RAY C. HUNT DR, Charlottesville, VA 22903
Open in Google Maps ↗

Secondary Practice Location 1

Location 11215 Lee StCharlottesville, VA 22908-0001 · Phone (434) 924-0211

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Gregory K, Hong M.d., Ph.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 ID345481081
PECOS Enrollment IDI20130723000859
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 Gregory Hong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Virginia Physicians Group
5.3 mi
Neuromusculoskeletal Medicine, Sports Medicine
4105 LEWIS AND CLARK DR
Charlottesville, VA 22911
  • Reassigned Medicare billing, Virginia enrollment
  • 2,820 clinicians in this Medicare group
NPI 1033138250 (434) 295-1000

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
280 services265 patients
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.
121 services41 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
45 services45 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.
25 services25 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

University Of Virginia Medical Center

Acute Care Hospitals · Charlottesville, VA
4/5 CMS rating
OwnershipGovernment - State
CMS Certification Number490009
Location1215 Lee StreetCharlottesville, VA 22908 · Charlottesville City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22903 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.66
Promoting Interoperability100
Improvement Activities40
Cost57.65

Referred Medical Equipment & Supplies CMS DME claims 3

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
14 suppliers41 claims133 services$6.33 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
7 suppliers15 claims24 services$1.11 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers21 claims21 services$195.51 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 8

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

DENNIS G. VOLLMER M.D.
Neurological Surgery
415 RAY C. HUNT DR
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 243-3633
SAMUEL LUKE OYER M.D.
Otolaryngology
415 RAY C. HUNT DR
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 982-0251
CHUN-PO YEN M.D.
Neurological Surgery
415 RAY C. HUNT DR
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 243-3633
DONALD L KIMPEL
Internal Medicine (Rheumatology)
415 RAY C. HUNT DR, STE 2100
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 243-0223
CHRISTINE A. EAGLESON
Internal Medicine (Endocrinology, Diabetes & Metabolism)
415 RAY C. HUNT DR, STE 2100
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-1825
KIMBERLY J. DOWDELL M.D.
Internal Medicine
415 RAY C. HUNT DR, STE 2100
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-2472
RACHEL KELLEY MORGAN PA-C
Physician Assistant
415 RAY C. HUNT DR
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 924-5700
JANET E. LEWIS
Internal Medicine (Rheumatology)
415 RAY C. HUNT DR, STE 2100
CHARLOTTESVILLE, VA 22903
Charlottesville City (434) 243-0223

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 Gregory Hong's NPI number?

The NPI number for Gregory Hong is 1386847093. It was assigned to this individual provider in the NPPES registry on June 8, 2007.

Where is Gregory Hong located?

Gregory Hong practices at 415 Ray C. Hunt Dr, Charlottesville, VA 22903. The listed phone number is (434) 924-1825.

What is Gregory Hong's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Gregory Hong enrolled in Medicare?

Yes. Gregory Hong 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 organization bills Medicare for Gregory Hong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Hong reassigns Medicare benefits to University Of Virginia Physicians Group (Charlottesville, 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 Gregory Hong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Hong accept?

Health plans from Oscar Health list Gregory Hong 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 Gregory Hong affiliated with any hospitals?

According to CMS data, Gregory Hong is affiliated with University Of Virginia Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Hong was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.