DR. GREGORY JACK HARDIN M.D.
NPI 1457677213
Internal Medicine in Louisville, KY

Q: What is the provider's specialty?

The provider's specialty is Internal Medicine with taxonomy code 207R00000X.

Active since April 19, 2010PECOS Enrolled

100/100

CMS Quality Rating

312 S 4TH ST STE 700, LOUISVILLE, KY 40202(502) 804-5495(833) 563-1715 Get Directions Write a Review

NPPES record last updated: January 30, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jan 30, 2026, Nov 15, 2024, Dec 8, 2023 and 1 more (4 updates tracked since 2023).

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About Dr. Gregory Jack Hardin M.d. NPPES

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

DR. GREGORY JACK HARDIN M.D. (NPI 1457677213) is an individual internal medicine provider in Louisville, Kentucky, licensed in Kentucky (59143) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Wentworth-douglass Hospital, and is a graduate of University Of Kentucky College Of Medicine (2010).

NPPES Registry Identity

NPI1457677213

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. GREGORY JACK HARDINCredential: M.D.

Location Address312 S 4TH ST STE 700Louisville, KY 40202-3046

Mailing Address312 S 4th St Ste 700Louisville, KY 40202-3046 · (502) 804-5495 · Fax (833) 563-1715

Phone(502) 804-5495

Fax(833) 563-1715

Sole ProprietorNo

Medical School CMSUniversity Of Kentucky College Of MedicineGraduated 2010

Enumeration DateApril 19, 2010

Last NPPES UpdateJanuary 30, 20264 updates tracked since enumeration

NPPES CertifiedJanuary 30, 2026

✔ NPI 1457677213 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in KY · 59143

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.

Also ListedHospitalistTaxonomy 208M00000X · License 271063 (NY)

312 S 4TH ST STE 700, Louisville, KY 40202

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gregory Jack Hardin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6800025644

PECOS Enrollment IDI20251223000209

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 4

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 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.

194 services79 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.

88 services84 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.

62 services61 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.

20 services20 patients

Hospital Affiliations CMS Care Compare

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

Wentworth-Douglass Hospital

Acute Care Hospitals · Dover, NH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number300018

Location789 Central AveDover, NH 03820 · Strafford County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 40202 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

$122.77 typical visit price

range $52.76 – $162.27

Typical copayment $30.69 (range $13.19 – $40.56)

Most-billed visit code 99204

Established Patient

$93.94 typical visit price

range $16.53 – $131.99

Typical copayment $23.48 (range $4.13 – $32.99)

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.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Quality

86.8

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 4

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

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

1 supplier18 claims18 services$33.04 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier24 claims24 services$13.88 avg. paid by Medicare

Transport chair, adult size, patient weight capacity up to and including 300 pounds E1038

DME-Other DME · category DE000N

1 supplier15 claims15 services$7.16 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier26 claims26 services$67.95 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.

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