Gary Kwartowitz, D.O.
NPI 1003924820 · Otolaryngology Physician · Clarkston, MI
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Kwartowitz, D.O. is a Otolaryngology Physician provider in Clarkston, MI (NPI 1003924820).
Provider details
- NPI number
- 1003924820
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- GK012039 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
877 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 280 | $14 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 227 | $85 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 111 | $105 |
| Comprehensive Hearing and Speech Recognition Test92557 | 69 | $33 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 44 | $159 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 130 | 61 |
| Ipratropium Bromide | 87 | 42 |
| Fluticasone Propionate | 60 | 31 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 26 | 24 |
| Ciprofloxacin Hcl | 22 | 19 |
| Ciprofloxacin Hcl/Dexamethbrand: Ciprofloxacin-Dexamethasone | 18 | 13 |
| Methylprednisolone | 17 | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$337 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-29
- Last updated
- 2009-12-16
Frequently asked questions
- What is Gary Kwartowitz's NPI number?
- Gary Kwartowitz's National Provider Identifier (NPI) is 1003924820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Kwartowitz's specialty?
- Gary Kwartowitz is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Kwartowitz located?
- Gary Kwartowitz's practice location on file with NPPES is 5701 Bow Pointe Dr, Clarkston, MI 48346-3198.
- What is Gary Kwartowitz's phone number?
- The practice phone number listed in the NPPES registry for Gary Kwartowitz is (248) 620-3100.
- Does Gary Kwartowitz accept Medicare?
- Gary Kwartowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Kwartowitz's NPI active?
- Yes — Gary Kwartowitz's NPI (1003924820) is active in the NPPES registry as of the last update on 2009-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.