Gregory Zolkowski, DO
NPI 1619959145 · Family Medicine Physician · Bolivar, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Zolkowski, DO is a Family Medicine Physician provider in Bolivar, MO (NPI 1619959145).
Provider details
- NPI number
- 1619959145
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- E-11776 (AR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
191 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 82 | $167 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 52 | $115 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 45 | $8 |
| Critical Care, First 30-74 Minutes99291 | 12 | $200 |
Typical Medicare-allowed amounts for these services range $8–$200 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 48 | 44 |
| Meloxicam | 44 | 42 |
| Prednisone | 39 | 34 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 27 | 19 |
| Dicyclomine Hcl | 16 | 15 |
| Ondansetronbrand: Ondansetron Odt | 16 | 16 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 14 | 13 |
Practice location
Mailing address
Additional practice locations (3)
- 1520 N Division StBlytheville, AR 72315-1448Phone: (870) 838-7300Fax: (870) 838-7459
- 611 W Lee AveOsceola, AR 72370-3001Phone: (870) 563-7000Fax: (870) 563-7189
- 1008 N Main StSikeston, MO 63801-5044Phone: (573) 471-1600Fax: (573) 472-7606
Registry dates
- Enumerated
- 2005-11-18
- Last updated
- 2020-03-13
- Certified
- 2020-03-13
Frequently asked questions
- What is Gregory Zolkowski's NPI number?
- Gregory Zolkowski's National Provider Identifier (NPI) is 1619959145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Zolkowski's specialty?
- Gregory Zolkowski is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Zolkowski located?
- Gregory Zolkowski's practice location on file with NPPES is 910 E San Martin St, Bolivar, MO 65613-2893.
- What is Gregory Zolkowski's phone number?
- The practice phone number listed in the NPPES registry for Gregory Zolkowski is (417) 777-4749.
- Does Gregory Zolkowski accept Medicare?
- Gregory Zolkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Zolkowski's NPI active?
- Yes — Gregory Zolkowski's NPI (1619959145) is active in the NPPES registry as of the last update on 2020-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.