Douglas Folzenlogen, M.D.
NPI 1801891338 · Internal Medicine Physician · Chillicothe, OH
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Folzenlogen, M.D. is a Internal Medicine Physician provider in Chillicothe, OH (NPI 1801891338).
Provider details
- NPI number
- 1801891338
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35074264F (OH)
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
21 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
965 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 390 | $74 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 262 | $107 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 199 | $111 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 114 | $157 |
Typical Medicare-allowed amounts for these services range $74–$157 (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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 33 | 15 |
| Prednisone | 27 | 27 |
| Ciprofloxacin Hcl | 25 | 25 |
| Metoprolol Tartrate | 23 | 14 |
| Furosemide | 22 | 16 |
| Pantoprazole Sodium | 22 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-21
- Last updated
- 2008-04-11
Frequently asked questions
- What is Douglas Folzenlogen's NPI number?
- Douglas Folzenlogen's National Provider Identifier (NPI) is 1801891338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Folzenlogen's specialty?
- Douglas Folzenlogen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Folzenlogen located?
- Douglas Folzenlogen's practice location on file with NPPES is 4437 State Route 159, Chillicothe, OH 45601-7065.
- What is Douglas Folzenlogen's phone number?
- The practice phone number listed in the NPPES registry for Douglas Folzenlogen is (740) 775-2652.
- Does Douglas Folzenlogen accept Medicare?
- Douglas Folzenlogen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Folzenlogen's NPI active?
- Yes — Douglas Folzenlogen's NPI (1801891338) is active in the NPPES registry as of the last update on 2008-04-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.