Physician Profile
Unclaimed ProfileAbout ROYSTER
Based in Hyannis, MA, Michael Denis Royster, M.D. is listed in the NPI registry under internal medicine. Michael is also listed as specializing in student in an organized health care education program. Medicare claims data shows Michael provided 1,236 services to 719 patients.
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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (508) 862-5976
- Email not available
Practice Locations
27 PARK ST
Hyannis, MA 02601
Procedures Most Often Billed to Medicare
1,236 services · 719 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
775 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
166 |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
164 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
131 |
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 internal medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 23 related providers in 3 groups
Other internal medicines in Hyannis 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2011 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Royster?
Dr. Royster is an internal medicine in Hyannis, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Royster's address?
Dr. Royster is listed at 27 PARK ST, Hyannis, MA 02601. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Royster?
The number on file is (508) 862-5976. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Royster?
Dr. Royster's National Provider Identifier is 1184913899. 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
Where did Dr. Royster train?
Dr. Royster attended Other, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Royster have?
Dr. Royster has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Royster perform?
According to Medicare billing data, Dr. Royster the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Royster's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Royster. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.