Frederick Karoub, MD
NPI 1679554562 · Internal Medicine Physician · Royal Oak, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Karoub, MD is a Internal Medicine Physician provider in Royal Oak, MI (NPI 1679554562).
Provider details
- NPI number
- 1679554562
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301059587 (MI)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,272 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 690 | $155 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 594 | $100 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 128 | $131 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 123 | $38 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 92 | $19 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 180 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 917 | 235 |
| Levothyroxine Sodium | 417 | 105 |
| Amlodipine Besylate | 391 | 102 |
| Alprazolam | 382 | 83 |
| Omeprazole | 309 | 85 |
| Lisinopril | 278 | 63 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-08
- Last updated
- 2022-03-08
- Certified
- 2022-03-08
Frequently asked questions
- What is Frederick Karoub's NPI number?
- Frederick Karoub's National Provider Identifier (NPI) is 1679554562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Karoub's specialty?
- Frederick Karoub is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Karoub located?
- Frederick Karoub's practice location on file with NPPES is 4045 W 13 Mile Rd, Royal Oak, MI 48073-6640.
- What is Frederick Karoub's phone number?
- The practice phone number listed in the NPPES registry for Frederick Karoub is (248) 288-2160.
- Does Frederick Karoub accept Medicare?
- Frederick Karoub is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Karoub's NPI active?
- Yes — Frederick Karoub's NPI (1679554562) is active in the NPPES registry as of the last update on 2022-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.