DR. NATHAN T TAGG (MD) – Neurology Physician, NPI 1477541480
Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
633 NEUROLOGY in MD
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Provider Addresses for DR. NATHAN T TAGG (MD)
University of Iowa Hospitals & Clinics, 200, Hawkins Drive, Iowa City, Johnson County, Iowa, 52245, United States
IOWA CITY, IA 522421009
Phone: (319) 356-2864
Fax: (319) 356-0363
Type: Mailing
Walter Reed National Military Medical Center, 8901, Rockville Pike, Glenbrook, Maplewood, Bethesda, Montgomery County, Maryland, 20889, United States
BETHESDA, MD 208891009
Phone: (301) 295-4771
Fax: (301) 295-4759
Type: Location
5213 S ALSTON AVE
DURHAM, NC 277134430
Phone: (240) 401-2631
Type: Mailing
2351 ERWIN RD
DURHAM, NC 277054699
Phone: (919) 681-3937
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: 2021-09-13
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 |
|---|---|---|---|---|
| I20210913002100 | I | Neurology | NC | 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 |
|---|---|---|---|---|
| 92083 | Exam of visual field with extended testing | 215 | 164 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 172 | 141 | $0 |
| 92133 | Imaging of optic nerve | 162 | 119 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 161 | 161 | $0 |
| 92060 | Exam to measure eye deviation and range of motion | 103 | 84 | $0 |
Insurance plans in this area (ZIP 52242)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| N E U R O L O G Y | AL | |
| Diagnostic Radiology | FL | |
| Certified Registered Nurse Anesthetist (Crna) | NC | |
| Hematology, Pathology | NC | |
| Infectious Disease | NC | |
| O B S T E T R I C S/ G Y N E C O L O G Y | NC | |
| Physician Assistant | TX | |
| Rheumatology, Internal Medicine | NC | |
| Pediatric Medicine | NC | |
| O P H T H A L M O L O G Y | NC |
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