Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEPHEN JAMES MULARZ D.O.
NPI 1982018156
Internal Medicine - Gastroenterology in Hazard, KY

Q: What is Stephen Mularz's NPI number?

The NPI number for Stephen Mularz is 1982018156. It was assigned to this individual provider in the NPPES registry on June 16, 2014.

Q: What is Stephen Mularz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Mularz was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since June 16, 2014PECOS Enrolled

97.4/100

CMS Quality Rating

200 MEDICAL CENTER DR, HAZARD, KY 41701(606) 439-3952(606) 439-8493 Get Directions Write a Review

NPPES record last updated: July 31, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 31, 2026, Mar 22, 2021, Sep 3, 2020 (3 updates tracked since 2020).

On this page

About Dr. Stephen James Mularz D.o. NPPES

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

DR. STEPHEN JAMES MULARZ D.O. (NPI 1982018156) is an individual gastroenterology provider in Hazard, Kentucky, licensed in Kentucky (E000) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS, is affiliated with Whitesburg Arh Hospital, and is a graduate of Lincoln Mem Univ, Debusk Col Of Osteopathic Med (2014).

NPPES Registry Identity

NPI1982018156

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. STEPHEN JAMES MULARZCredential: D.O.

Location Address200 MEDICAL CENTER DRHazard, KY 41701-9466

Mailing Address200 Medical Center DrHazard, KY 41701-9466 · (606) 439-3952 · Fax (606) 439-8493

Phone(606) 439-3952

Fax(606) 439-8493

Sole ProprietorNo

Medical School CMSLincoln Mem Univ, Debusk Col Of Osteopathic MedGraduated 2014

Enumeration DateJune 16, 2014

Last NPPES UpdateJuly 31, 20263 updates tracked since enumeration

NPPES CertifiedJuly 31, 2026

✔ NPI 1982018156 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in KY · E000

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License E000 (KY)

200 MEDICAL CENTER DR, Hazard, KY 41701

Open in Google Maps ↗

Other Identifiers 1

Other04868KY · License

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Home State Health, Ambetter Health and more.Insurance ›

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

Dr. Stephen James Mularz D.o. 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 ID6800208992

PECOS Enrollment IDI20201214003060

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 14

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.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

153 services145 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

68 services63 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

64 services63 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

48 services48 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.

36 services30 patients

Injection of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43236

This procedure involves a flexible tube, called an endoscope, which is passed through your mouth to examine your esophagus, stomach, and upper small bowel. A special needle is used to inject medication or other substances directly into these areas.

33 services21 patients

Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm 43249

This procedure involves using a flexible tube with a camera, called an endoscope, to gently expand narrowed areas in your esophagus, stomach, or upper small bowel. A small balloon is inflated, making it easier for food and liquid to pass through. It's safe and effective.

29 services22 patients

Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43235

This procedure, known as an upper endoscopy, involves inserting a thin, flexible tube with a camera down the throat to examine the esophagus, stomach, and upper small bowel. It helps diagnose conditions like ulcers or inflammation.

15 services15 patients

Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43255

This procedure involves using a flexible tube with a light, called an endoscope, to examine and treat bleeding in the esophagus, stomach, or upper small bowel. It's a safe, effective way to control bleeding and ensure your digestive health.

13 services11 patients

Study of esophagus to assess movement 91010

This procedure, known as esophageal manometry, involves studying the esophagus or food pipe to evaluate its movement and pressure. It helps understand how well the esophagus can move food to the stomach. Involving a thin, flexible tube, it's a safe, minimally invasive test.

13 services13 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.

13 services13 patients

Removal of stone or debris from bile or pancreatic duct using a flexible endoscope 43264

This procedure, called an endoscopic retrograde cholangiopancreatography (ERCP), involves using a flexible tube with a camera (endoscope) to locate and remove stones or debris from your bile or pancreatic duct. It's a non-surgical method to clear the ducts, enhancing your digestive health.

12 services11 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.

12 services12 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

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.

Whitesburg Arh Hospital

Acute Care Hospitals · Whitesburg, KY

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number180002

Location240 Hospital RoadWhitesburg, KY 41858 · Letcher County

Emergency services Birthing friendly

Hazard Arh Regional Medical Center

Acute Care Hospitals · Hazard, KY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number180029

Location100 Medical Center DriveHazard, KY 41701 · Perry County

Emergency services Birthing friendly

Harlan Arh Hospital

Acute Care Hospitals · Harlan, KY

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number180050

Location81 Ball Park RoadHarlan, KY 40831 · Harlan County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 41701 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.

97.4/100

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

Scored through an Alternative Payment Model

Quality

76.55

Promoting Interoperability

100

Improvement Activities

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.

C KRISHNASWAMY MD PSC

Psychiatry & Neurology (Neurology)

200 MEDICAL CENTER DR, SUITE 3P
HAZARD, KY 41701

Perry County (606) 487-7955

SYDNEY ROARK APRN

Nurse Practitioner

200 MEDICAL CENTER DR
HAZARD, KY 41701

Perry County (606) 439-3952

DR. RAYMOND ELSOUEIDI M.D.

Internal Medicine (Hematology & Oncology)

200 MEDICAL CENTER DR
HAZARD, KY 41701

Perry County (606) 439-6600

DR. WILLIAM BURLIN GIBSON D.M.D.

Dentist (Oral and Maxillofacial Surgery)

200 MEDICAL CENTER DR, SUITE 2-O
HAZARD, KY 41701

Perry County (606) 487-0088

HAZARD RADIOLOGY ASSOCIATES INC.

Radiology (Diagnostic Radiology)

200 MEDICAL CENTER DR, SUITE 1-N
HAZARD, KY 41701

Perry County (606) 439-5057

BIGHNESH SATPATHY M.D.

Radiology (Vascular & Interventional Radiology)

200 MEDICAL CENTER DR
HAZARD, KY 41701

Perry County (606) 439-5057

VIDYA B YALAMANCHI MD

Internal Medicine (Cardiovascular Disease)

200 MEDICAL CENTER DR
HAZARD, KY 41701

Perry County (606) 487-7510

FRANK DANIEL MONGIARDO M.D. P.S.C

Otolaryngology (Otolaryngology/Facial Plastic Surgery)

200 MEDICAL CENTER DR, SUITE 2N
HAZARD, KY 41701

Perry County (606) 439-4466

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 Stephen Mularz's NPI number?

The NPI number for Stephen Mularz is 1982018156. It was assigned to this individual provider in the NPPES registry on June 16, 2014.

Where is Stephen Mularz located?

Stephen Mularz practices at 200 Medical Center Dr, Hazard, KY 41701. The listed phone number is (606) 439-3952.

What is Stephen Mularz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Stephen Mularz enrolled in Medicare?

Yes. Stephen Mularz 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.

What insurance does Stephen Mularz accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Home State Health, Ambetter of Tennessee and CareSource list Stephen Mularz 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 Stephen Mularz affiliated with any hospitals?

According to CMS data, Stephen Mularz is affiliated with Whitesburg Arh Hospital, Hazard Arh Regional Medical Center and Harlan Arh Hospital.

When was this NPI record last updated?

The NPPES record for Stephen Mularz was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.