ALAN JACOB MERIN (MD) – Nephrology Physician, NPI 1366440547
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,168 NEPHROLOGY in TX
Provider Addresses for ALAN JACOB MERIN (MD)
PO box, Russell Road, Paoli, Tredyffrin Township, Chester County, Pennsylvania, 19301, United States
SAN ANTONIO, TX 782291769
Phone: (210) 224-1079
Fax: (210) 281-0248
Type: Mailing
1211 E COMMERCE ST
SAN ANTONIO, TX 782053307
Phone: (210) 224-1079
Fax: (210) 281-0248
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 110 Open Payments records for all available years, with a total value of $1,603.
Total Amount is formed as General ($1,603) + Research ($0) + Ownership ($0) = $1,603.
Last reported payment date: 2024-10-11 • Largest payer in this snapshot: Lilly USA, LLC ($357).
Total Amount
$1,603
General + Research + Ownership
Payments
110
Total payment records
General Amount
$1,603
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $357 |
| Bausch Health US, LLC | $198 |
| PFIZER INC. | $195 |
| AstraZeneca Pharmaceuticals LP | $176 |
| Bayer Healthcare Pharmaceuticals Inc. | $166 |
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: 2011-04-25
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 |
|---|---|---|---|---|
| I20110425000846 | I | Nephrology | TX | 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 |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 77 | 17 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 50 | 13 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 11 | $0 |
Insurance plans in this area (ZIP 78229)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEPHROLOGY | TX | 90935 | Hemodialysis procedure with one physician evaluation | 65 | 23 |
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