GUY SCOTT MULLIN (M.D.) – Ophthalmology Physician, NPI 1285680157
Ophthalmology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,144 OPHTHALMOLOGY in PA
Provider Addresses for GUY SCOTT MULLIN (M.D.)
409 EXECUTIVE DR
LANGHORNE, PA 190478003
Phone: (215) 860-3400
Fax: (215) 860-8779
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)
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: 2011-11-22
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 |
|---|---|---|---|---|
| I20111122000592 | I | Ophthalmology | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 376 | 278 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 251 | 237 | $0 |
| 76519 | Ultrasound scan to determine eye length and lens power | 100 | 62 | $0 |
| 66984 | Removal of cataract with insertion of prosthetic lens | 85 | 49 | $0 |
| 66821 | Removal of recurring cataract in lens capsule using a laser | 71 | 54 | $0 |
Insurance plans in this area (ZIP 19047)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPHTHALMOLOGY | PA | 92083 | Measurement of field of vision during daylight conditions | 15 | 15 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O P T O M E T R Y | PA |
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