AMY TESAR (DO) – Internal Medicine Physician, NPI 1841307477
Internal Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,353 INTERNAL MEDICINE in IA
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Provider Addresses for AMY TESAR (DO)
Mercy Family Clinic - Regency, 621, South Illinois Avenue, Regency, Mason City, Cerro Gordo County, Iowa, 50401, United States
SUITE 103
MASON CITY, IA 504015489
Phone: (515) 532-2811
Fax: (515) 532-9336
Type: Mailing
MercyOne North Iowa Medical Center, 1000, 4th Street Southwest, Mason City, Cerro Gordo County, Iowa, 50401, United States
MASON CITY, IA 504012800
Phone: (641) 428-6999
Fax: (641) 428-6678
Type: Location
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: 2005-12-19
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 |
|---|---|---|---|---|
| I20051219000247 | I | Internal Medicine | IA | 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 | 826 | 259 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 238 | 220 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 100 | 95 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 43 | 43 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 28 | 28 | $0 |
Insurance plans in this area (ZIP 50401)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| P S Y C H I A T R Y | IA | |
| Physician Assistant | TN | |
| - | IA | |
| - | PA | |
| Cardiovascular Disease (Cardiology), Critical Care (Intensivists) | IA | |
| Certified Registered Nurse Anesthetist (Crna) | IA | |
| Physician Assistant | IA | |
| - | IA | |
| Sleep Medicine | IA | |
| Nurse Practitioner | IA |
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