KATRINA ALISON ARMSTRONG (MD) – Hospitalist Physician, NPI 1275563330
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,735 INTERNAL MEDICINE in MA
Provider Addresses for KATRINA ALISON ARMSTRONG (MD)
3701, Market Street, Powelton Village, Philadelphia, Philadelphia County, Pennsylvania, 19104, United States
6TH FLOOR, SUITE 640
PHILADELPHIA, PA 191044206
Phone: (215) 662-2250
Fax: (215) 615-3995
Type: Mailing
73 High St
Charlestown, MA 021293026
Phone: (617) 724-8135
Type: Location
55 FRUIT STREET
GRAY/BIGELOW STE 730, # 738
BOSTON, MA 02114
Phone: (617) 726-8447
Fax: (617) 724-7441
Type: Mailing
73 HIGH ST
CHARLESTOWN, MA 021293026
Phone: (617) 724-8135
Type: Location
630 W 168TH ST # 4
NEW YORK, NY 100323725
Phone:
Type: Mailing
177 FORT WASHINGTON AVE
NEW YORK, NY 100323733
Phone: (212) 305-5138
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: 2023-01-10
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20210706002767 | I | Internal Medicine | TX | TBD |
| I20230110000291 | I | Internal Medicine | NY | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 19104)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | VA | |
| U R O L O G Y | NY | |
| Nurse Practitioner | NY | |
| - | CA | |
| Emergency Medicine | NY | |
| General Surgery | NY | |
| Neuropsychiatry, Neurology | NY | |
| - | NY | |
| N E U R O S U R G E R Y | NY | |
| - | NY |
Reviews
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