RONALD F FLAX (M.D.) – Anesthesiology Physician, NPI 1821099433
Anesthesiology Physician
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NPPES metrics only — not quality of care.
2,825 ANESTHESIOLOGY in PA
Provider Addresses for RONALD F FLAX (M.D.)
1861 POWDER MILL RD
YORK, PA 174024723
Phone: (717) 718-2041
Type: Mailing
1855 Powder Mill Rd Ste 210
York, PA 174024723
Phone: (717) 747-8306
Fax: (717) 741-9458
Type: Location
3715, Birchmere Court, Worthington Park, Owings Mills, Baltimore County, Maryland, 21117, United States
OWINGS MILLS, MD 211171298
Phone:
Type: Mailing
14820 PHYSICIANS LN
242
ROCKVILLE, MD 208503945
Phone: (301) 838-9606
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: 2021-09-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20040131000237 | I | Anesthesiology | MD | TBD |
| I20060310000150 | I | Anesthesiology | DC | TBD |
| I20210907001520 | I | Anesthesiology | 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 |
|---|---|---|---|---|
| 64447 | Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 105 | 104 | $0 |
| 01402 | Anesthesia for procedure for total knee joint replacement | 79 | 79 | $0 |
| 01214 | Anesthesia for total hip replacement | 29 | 29 | $0 |
| 64415 | Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) | 28 | 28 | $0 |
| 01480 | Anesthesia for other procedure on lower leg, ankle, and foot bones | 19 | 18 | $0 |
Insurance plans in this area (ZIP 17402)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ANESTHESIOLOGY | MD | 01402 | Anesthesia for open or endoscopic total knee joint replacement | 22 | 22 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physical Therapist In Private Practice | PA | |
| P O D I A T R Y | PA | |
| Certified Registered Nurse Anesthetist (Crna) | PA | |
| Physical Therapist In Private Practice | PA | |
| Occupational Therapist In Private Practice | PA | |
| Physical Medicine And Rehabilitation | PA | |
| Physical Therapist In Private Practice | MD | |
| - | PA | |
| Physical Therapist In Private Practice | PA | |
| Internal Medicine | PA |
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