Physician Profile
Unclaimed ProfileAbout MARKOS
Ronald P Markos, MD is a healthcare provider in Sellersville, PA specialising in gastroenterology. Ronald trained at Hahnemann University College of Medicine, graduating in 1988.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Markos's specialty?
Dr. Markos is a gastroenterology in Sellersville, PA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where can I find Dr. Markos?
Dr. Markos is listed at 817 LAWN AVE, Sellersville, PA 18960. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Markos?
The number on file is (215) 257-5071. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Markos's NPI number?
Dr. Markos's National Provider Identifier is 1851399786. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Markos's medical education?
Dr. Markos attended Hahnemann University College of Medicine, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Markos been practising?
Dr. Markos has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Markos known for?
According to Medicare billing data, Dr. Markos performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, removal of external hemorrhoids by rubber banding and biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope; provides treatments such as infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Markos confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Markos. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (215) 257-5071
- Email not available
Practice Locations
817 LAWN AVE
Sellersville, PA 18960
Procedures Most Often Billed to Medicare
9,971 services · 1,406 patients · 20 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
254 |
| Removal of external hemorrhoids by rubber banding | Procedure | 46221 |
157 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
135 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
49 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
39 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
14 |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
13 |
| Dilation of esophagus | Procedure | 43450 |
13 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
31 |
| Injection, vedolizumab, intravenous, 1 mg | Drug given | J3380 |
8,400 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterology specialists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 27 related providers in 4 groups
Other gastroenterology specialists in Sellersville 5
Same specialty, same city.
Trained at Hahnemann University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at Hahnemann University College of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 7
Providers in PA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.