DOUGLAS FOLZENLOGEN (M.D.) – Internal Medicine Physician, NPI 1801891338
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,199 INTERNAL MEDICINE in OH
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Provider Addresses for DOUGLAS FOLZENLOGEN (M.D.)
4437, Chillicothe Lancaster Road Southwest, Oakland, Fairfield County, Ohio, 43130, United States
STE. 115
CHILLICOTHE, OH 456017065
Phone: (740) 775-2652
Fax: (740) 775-2699
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2016-09-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20160928001500 | I | Internal Medicine | SC | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 576 | 246 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 265 | 251 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 127 | 76 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 102 | 99 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $0 |
Insurance plans in this area (ZIP 45601)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | OH | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 2277 | 1246 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Sleep Medicine, Cardiovascular Disease (Cardiology) | SC | |
| Emergency Medicine | SC | |
| Certified Nurse Midwife (Cnm) | SC | |
| Nurse Practitioner | SC | |
| Physician Assistant | SC | |
| - | SC | |
| P S Y C H I A T R Y | CO | |
| Physician Assistant | SC | |
| - | SC | |
| Family Practice | NC |
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