Michael Koontz, MD
NPI 1245410588 · Internal Medicine Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Koontz, MD is a Internal Medicine Physician provider in Monterey, CA (NPI 1245410588).
Provider details
- NPI number
- 1245410588
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A105130 (CA)
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
18 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
8,302 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,384 | $136 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,372 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,357 | $8 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 514 | $141 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 493 | $31 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 77 | 19 |
| Abiraterone Acetate | 44 | — |
| Levothyroxine Sodium | 27 | — |
| Epoetin Alfabrand: Procrit | 22 | — |
| Dexamethasone | 21 | 12 |
| Ondansetron Hcl | 21 | 11 |
| Apixabanbrand: Eliquis | 20 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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
- 2007-11-04
- Last updated
- 2014-07-01
Frequently asked questions
- What is Michael Koontz's NPI number?
- Michael Koontz's National Provider Identifier (NPI) is 1245410588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Koontz's specialty?
- Michael Koontz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Koontz located?
- Michael Koontz's practice location on file with NPPES is 5 Harris Ct Bldg T, Monterey, CA 93940-5750.
- What is Michael Koontz's phone number?
- The practice phone number listed in the NPPES registry for Michael Koontz is (831) 375-4105.
- Does Michael Koontz accept Medicare?
- Michael Koontz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Koontz's NPI active?
- Yes — Michael Koontz's NPI (1245410588) is active in the NPPES registry as of the last update on 2014-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.