MAXWELL B MERKOW (MD) – Neurological Surgery Physician, NPI 1194951723
Neurological Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
795 NEUROSURGERY in CA
Provider Addresses for MAXWELL B MERKOW (MD)
130 LA CASA VIA # 2-210
WALNUT CREEK, CA 945983045
Phone: (925) 309-5155
Fax: (925) 623-5156
Type: Location
Bay Area Colon Rectal Surgeons, 365, Lennon Lane, Shadelands Business Park, Walnut Creek, Contra Costa County, California, 95498, United States
STE 250
WALNUT CREEK, CA 945985915
Phone: (215) 615-4390
Type: Mailing
Hospital of the University of Pennsylvania, 3400, Spruce Street, University City, Philadelphia, Philadelphia County, Pennsylvania, 19104, United States
ONE MALONEY
PHILADELPHIA, PA 191044206
Phone: (215) 615-4390
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $8,962.
Total Amount is formed as General ($8,962) + Research ($0) + Ownership ($0) = $8,962.
Last reported payment date: 2024-11-18 • Largest payer in this snapshot: Medtronic, Inc. ($8,794).
Total Amount
$8,962
General + Research + Ownership
Payments
11
Total payment records
General Amount
$8,962
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $8,794 |
| DePuy Synthes Sales Inc. | $140 |
| Vertos Medical, Inc. | $28 |
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: 2016-03-11
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 |
|---|---|---|---|---|
| I20160311000737 | I | Neurosurgery | CA | 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 | 69 | 67 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 31 | 31 | $0 |
| 22853 | Insertion of cage or mesh device to spine bone and disc space during spine fusion | 24 | 18 | $0 |
| 61783 | Computer-assisted spinal procedure | 18 | 16 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 94598)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology, Nuclear Medicine | CA | |
| Internal Medicine, Geriatric Medicine | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology, Interventional Radiology, Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology, Pediatric Medicine | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA | |
| Diagnostic Radiology | CA |
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