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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MICHAEL DENIS ROYSTER M.D.
NPI 1184913899
Internal Medicine in Hyannis, MA

Active since April 04, 2011PECOS Enrolled
85.73/100
CMS Quality Rating

NPPES record last updated: July 26, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 26, 2026, Dec 29, 2016 (2 updates tracked since 2016).

About Michael Denis Royster M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL DENIS ROYSTER M.D. (NPI 1184913899) is an individual internal medicine provider in Hyannis, Massachusetts, licensed in Massachusetts (258692) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Cape Cod Hospital, and is a graduate of Other (2011).

NPPES Registry Identity

NPI1184913899
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMICHAEL DENIS ROYSTERCredential: M.D.
Location Address27 PARK STHyannis, MA 02601-5230
Mailing Address47 Popple Bottom RoadSandwich, MA 02563 · (504) 258-0346
Phone(508) 862-5976
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateApril 4, 2011
Last NPPES UpdateJuly 26, 20262 updates tracked since enumeration
NPPES CertifiedJuly 26, 2026
✔ NPI 1184913899 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 258692
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
27 PARK ST, Hyannis, MA 02601
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Denis Royster M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1658598297
PECOS Enrollment IDI20140805003090
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
775 services274 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
166 services158 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
164 services162 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
131 services125 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Cape Cod Hospital

Acute Care Hospitals · Hyannis, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220012
Location27 Park StreetHyannis, MA 02601 · Barnstable County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality74.06
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier12 claims12 services$922.57 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers18 claims18 services$74.51 avg. paid by Medicare
Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$32.53 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ERICA MARY HAAS MD
Anesthesiology
27 PARK ST
HYANNIS, MA 02601
Barnstable County (508) 771-1800
KEVIN BRESNAHAN MD
Emergency Medicine
27 PARK ST
HYANNIS, MA 02601
Barnstable County (508) 862-5981
PERINO V. RUSPANTINE CRNA
Nurse Anesthetist, Certified Registered
27 PARK ST
HYANNIS, MA 02601
Barnstable County (508) 562-5000
ISAAC GOODMAN PA-C
Physician Assistant
27 PARK ST, PHS PROVIDER ENROLLMENT
HYANNIS, MA 02601
Barnstable County (508) 862-5981
MS. MICHELLE KATHRYN ANGELI
Nurse Anesthetist, Certified Registered
27 PARK ST
HYANNIS, MA 02601
Barnstable County (602) 909-1422
DR. GEOFFREY NEIL CHAMPAGNE D.O.
Hospitalist
27 PARK ST
HYANNIS, MA 02601
Barnstable County (508) 862-5976
DR. ERIC MICHAEL BAND M.D.
Anesthesiology
27 PARK ST
HYANNIS, MA 02601
Barnstable County (508) 775-5011
WILLIAM DICKSON LICSW
Social Worker (Clinical)
27 PARK ST
HYANNIS, MA 02601
Barnstable County (508) 862-5729

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Royster's NPI number?

The NPI number for Michael Royster is 1184913899. It was assigned to this individual provider in the NPPES registry on April 4, 2011.

Where is Michael Royster located?

Michael Royster practices at 27 Park St, Hyannis, MA 02601. The listed phone number is (508) 862-5976.

What is Michael Royster's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Michael Royster enrolled in Medicare?

Yes. Michael Royster is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Michael Royster affiliated with any hospitals?

According to CMS data, Michael Royster is affiliated with Cape Cod Hospital.

When was this NPI record last updated?

The NPPES record for Michael Royster was last updated on July 26, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.