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DR. GREGORY STANLEY ZOLKOWSKI DO
NPI 1619959145
Family Medicine in Bolivar, MO

Active since November 18, 2005PECOS EnrolledAccepts Medicare Assignment
92.43/100
CMS Quality Rating
910 E SAN MARTIN ST, BOLIVAR, MO 65613(417) 777-4749(417) 777-8041 Get Directions Write a Review

NPPES record last updated: March 13, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 13, 2020, May 14, 2019 (2 updates tracked since 2019).

About Dr. Gregory Stanley Zolkowski Do NPPES

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

DR. GREGORY STANLEY ZOLKOWSKI DO (NPI 1619959145) is an individual family medicine provider in Bolivar, Missouri, licensed in Missouri (101186) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Washington County Memorial Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1619959145
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. GREGORY STANLEY ZOLKOWSKICredential: DO
Location Address910 E SAN MARTIN STBolivar, MO 65613-2893
Mailing AddressPo Box 536Bolivar, MO 65613-0536 · (417) 777-4749 · Fax (417) 777-8041
Phone(417) 777-4749
Fax(417) 777-8041
Sole ProprietorYes
Medical School CMSMidwestern University, Chicago College Of Osteopathic MedGraduated 1987
Enumeration DateNovember 18, 2005
Last NPPES UpdateMarch 13, 20202 updates tracked since enumeration
NPPES CertifiedMarch 13, 2020
✔ NPI 1619959145 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in MO · 101186✔ Licensed in AR · E-11776
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedEmergency MedicineTaxonomy 207P00000X · License E-11776 (AR)
910 E SAN MARTIN ST, Bolivar, MO 65613
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11520 N Division StBlytheville, AR 72315-1448 · Phone (870) 838-7300 · Fax (870) 838-7459
Location 2611 W Lee AveOsceola, AR 72370-3001 · Phone (870) 563-7000 · Fax (870) 563-7189
Location 31008 N Main StSikeston, MO 63801-5044 · Phone (573) 471-1600 · Fax (573) 472-7606

Other Identifiers 3

Medicaid244710802MO
OtherP00786258Rr Medicare
Medicaid1619959145MO

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

Dr. Gregory Stanley Zolkowski Do 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 ID3375548068
PECOS Enrollment IDI20080707000288
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

3

Medicare enrollment records show Gregory Zolkowski reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hermann Area Hospital District
131 mi
Family Medicine
509 WEST 18TH
Hermann, MO 65041
  • Reassigned Medicare billing, Missouri enrollment
  • 81 clinicians in this Medicare group
NPI 1083749188 (573) 486-2191
Potosi Emergency Group, LLC
147 mi
Emergency Medicine
300 HEALTH WAY DR
Potosi, MO 63664
  • Reassigned Medicare billing, Missouri enrollment
  • 60 clinicians in this Medicare group
NPI 1881075349 (800) 893-9698
Sikeston Emergency Group LLC
217 mi
Emergency Medicine
1008 N MAIN ST
Sikeston, MO 63801
  • Reassigned Medicare billing, Missouri enrollment
  • 46 clinicians in this Medicare group
NPI 1427575299 (573) 471-1600

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 4

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
82 services73 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
52 services45 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
45 services40 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
12 services11 patients

Hospital Affiliations CMS Care Compare

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

Washington County Memorial Hospital

Critical Access Hospitals · Potosi, MO
OwnershipGovernment - Local
CMS Certification Number261308
Location300 Health WayPotosi, MO 63664 · Washington County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 65613 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
$81.64 typical visit price
range $52.28 – $161.24
Typical copayment $20.41 (range $13.07 – $40.31)
Most-billed visit code 99203
Established Patient
$93.24 typical visit price
range $16.30 – $131.05
Typical copayment $23.31 (range $4.07 – $32.76)
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.

92.43/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.47
Improvement Activities40

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 Zolkowski's NPI number?

The NPI number for Gregory Zolkowski is 1619959145. It was assigned to this individual provider in the NPPES registry on November 18, 2005.

Where is Gregory Zolkowski located?

Gregory Zolkowski practices at 910 E San Martin St, Bolivar, MO 65613. The listed phone number is (417) 777-4749.

What is Gregory Zolkowski's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Gregory Zolkowski enrolled in Medicare?

Yes. Gregory Zolkowski 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 Gregory Zolkowski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Zolkowski reassigns Medicare benefits to 3 organizations: Hermann Area Hospital District (Hermann, MO), Potosi Emergency Group, LLC (Potosi, MO) and Sikeston Emergency Group LLC (Sikeston, MO). 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 Gregory Zolkowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gregory Zolkowski affiliated with any hospitals?

According to CMS data, Gregory Zolkowski is affiliated with Washington County Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Zolkowski was last updated on March 13, 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.