MARK A. EASTERDAY (M.D.) – Internal Medicine Physician, NPI 1891773263
Internal Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,565 HOSPITALIST in OH
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Provider Addresses for MARK A. EASTERDAY (M.D.)
551, Central Avenue, Chatham Estates, South Chester, Chester, Delaware County, Pennsylvania, 19013, United States
SUITE 301
DELAWARE, OH 43015
Phone: (740) 615-1800
Fax: (740) 615-1801
Type: Location
L, Defiance Drive, Buckeye Village, Columbus, Sharon, Franklin County, Ohio, 43210, United States
COLUMBUS, OH 432603401
Phone: (740) 615-1324
Fax: (740) 615-1344
Type: Mailing
551 W. Central Ave
Suite 301
Delaware, OH 43015
Phone: (740) 615-1800
Fax: (740) 615-1801
Type: Location
477 COOPER RD STE 300
WESTERVILLE, OH 430818057
Phone: (380) 898-8808
Fax: (380) 898-8842
Type: Mailing
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: 2004-09-11
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 |
|---|---|---|---|---|
| I20040911000321 | I | Hospitalist | OH | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 33 | 28 | $0 |
Insurance plans in this area (ZIP 43015)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | OH | |
| Nurse Practitioner | OH | |
| Hospice/Palliative Care, Family Practice | OH | |
| Certified Clinical Nurse Specialist (Cns) | OH | |
| Internal Medicine, Hospice/Palliative Care | OH | |
| Nurse Practitioner | OH | |
| - | OH | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OH | |
| - | OH |
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