Karen Denbesten, MD
NPI 1245226323 · Infectious Disease Physician · Petoskey, MI
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Denbesten, MD is a Infectious Disease Physician provider in Petoskey, MI (NPI 1245226323).
Provider details
- NPI number
- 1245226323
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301091715 (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
20 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
347 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 214 | $80 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 133 | $132 |
Typical Medicare-allowed amounts for these services range $80–$132 (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 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ceftriaxone Sodiumbrand: Ceftriaxone | 84 | 23 |
| Daptomycin | 75 | 16 |
| Piperacillin Sodium/Tazobactambrand: Piperacillin-Tazobactam | 75 | 21 |
| Cefazolin Sodium | 51 | 14 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 43 | — |
| Cefepime Hcl | 36 | — |
| Doxycycline Hyclate | 31 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 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
- 2005-09-23
- Last updated
- 2015-01-24
Frequently asked questions
- What is Karen Denbesten's NPI number?
- Karen Denbesten's National Provider Identifier (NPI) is 1245226323, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Denbesten's specialty?
- Karen Denbesten is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Denbesten located?
- Karen Denbesten's practice location on file with NPPES is 560 W Mitchell St, Petoskey, MI 49770-2275.
- What is Karen Denbesten's phone number?
- The practice phone number listed in the NPPES registry for Karen Denbesten is (231) 487-3590.
- Does Karen Denbesten accept Medicare?
- Karen Denbesten is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Denbesten's NPI active?
- Yes — Karen Denbesten's NPI (1245226323) is active in the NPPES registry as of the last update on 2015-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.