DR. ANDREW LEE MERMELSTEIN (MD) – Rheumatology Physician, NPI 1215920335
Rheumatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
404 RHEUMATOLOGY in PA
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Provider Addresses for DR. ANDREW LEE MERMELSTEIN (MD)
170, West Germantown Pike, Penn Square, East Norriton Township, Montgomery County, Pennsylvania, 19401, United States
SUITE C-2
EAST NORRITON, PA 194011389
Phone: (610) 277-2750
Fax: (610) 277-7949
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)
CMS reports 4 Open Payments records for all available years, with a total value of $149.
Total Amount is formed as General ($149) + Research ($0) + Ownership ($0) = $149.
Last reported payment date: 2023-08-24 • Largest payer in this snapshot: Organogenesis Inc. ($106).
Total Amount
$149
General + Research + Ownership
Payments
4
Total payment records
General Amount
$149
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-08-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Organogenesis Inc. | $106 |
| Smith+Nephew, Inc. | $26 |
| PFIZER INC. | $17 |
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: 2010-08-26
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 |
|---|---|---|---|---|
| I20100826000601 | I | Rheumatology | PA | 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 |
|---|---|---|---|---|
| J0717 | Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | 77,600 | 35 | $0 |
| J3262 | Injection, tocilizumab, 1 mg | 46,400 | 17 | $0 |
| J3111 | Injection, romosozumab-aqqg, 1 mg | 12,181 | 17 | $0 |
| J0897 | Injection, denosumab, 1 mg | 10,920 | 136 | $0 |
| J0129 | Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) | 8,651 | 28 | $0 |
Insurance plans in this area (ZIP 19401)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| RHEUMATOLOGY | PA | 96415 | Infusion of chemotherapy into a vein | 326 | 95 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| N E U R O L O G Y | PA | |
| Family Practice | PA | |
| Emergency Medicine | PA | |
| Family Practice | PA | |
| Family Practice | PA | |
| Orthopedic Surgery | PA | |
| Physician Assistant | PA | |
| Internal Medicine | MA | |
| Physician Assistant | PA | |
| Orthopedic Surgery | PA |
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