ROCK H. JEAN-GUILLAUME D.O.
NPI 1730157918
Emergency Medicine in Holden, MA

Q: What is Rock Jean-guillaume's NPI number?

The NPI number for Rock Jean-guillaume is 1730157918. It was assigned to this individual provider in the NPPES registry on March 14, 2006.

Q: What is Rock Jean-guillaume's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Active since March 14, 2006PECOS EnrolledAccepts Medicare Assignment

5 SHREWSBURY ST STE D, HOLDEN, MA 01520(508) 829-3800(508) 829-3802 Get Directions Write a Review

NPPES record last updated: November 22, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 22, 2020, Apr 20, 2020, Apr 16, 2019 and 1 more (4 updates tracked since 2018).

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About Rock H. Jean-guillaume D.o. NPPES

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

ROCK H. JEAN-GUILLAUME D.O. (NPI 1730157918) is an individual emergency medicine provider in Holden, Massachusetts, licensed in Massachusetts (215241) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Mcleod Loris Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1730157918

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameROCK H. JEAN-GUILLAUMECredential: D.O.

Location Address5 SHREWSBURY ST STE DHolden, MA 01520

Mailing Address5 Shrewsbury St Ste DHolden, MA 01520-1960 · (508) 829-3810 · Fax (508) 829-3815

Phone(508) 829-3800

Fax(508) 829-3802

Sole ProprietorNo

Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 1998

Enumeration DateMarch 14, 2006

Last NPPES UpdateNovember 22, 20204 updates tracked since enumeration

NPPES CertifiedNovember 22, 2020

✔ NPI 1730157918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in MA · 215241

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

5 SHREWSBURY ST STE D, Holden, MA 01520

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Secondary Practice Locations 2

Location 12040 Boston Rd Ste 5Wilbraham, MA 01095-1380 · Phone (413) 599-3800 · Fax (413) 279-1900

Location 255 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 421-1400 · Fax (508) 421-1490

Other Identifiers 1

Medicaid110006102AMA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Rock H. Jean-guillaume D.o. 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 ID8426042839

PECOS Enrollment IDI20200729000554

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.

Medicare Billing Reassignments

Medicare enrollment records show Rock Jean-guillaume reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Associated Physicians Of Harvard Medical Faculty Physicians At Beth Is

37 mi

Multi-Specialty

330 BROOKLINE AVE
Boston, MA 02215

Reassigned Medicare billing, Massachusetts enrollment
Also billed through NPI 1952358533 (Massachusetts)
1,006 clinicians in this Medicare group

NPI 1861216038 (617) 667-2906

Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc

37 mi

Emergency Medicine

330 BROOKLINE AVE
Boston, MA 02215

Reassigned Medicare billing, Massachusetts enrollment
247 clinicians in this Medicare group

NPI 1316987993 (617) 632-7441

Acs Primary Care Physicians - Southeast PC

703 mi

Emergency Medicine

809 82ND PKWY
Myrtle Beach, SC 29572

Reassigned Medicare billing, South Carolina enrollment
559 clinicians in this Medicare group

NPI 1861430555 (843) 692-1000

Conway Hospital Emergency Professional Services

707 mi

Emergency Medicine

300 SINGLETON RIDGE ROAD
Conway, SC 29526

Reassigned Medicare billing, South Carolina enrollment
47 clinicians in this Medicare group

NPI 1487844510 (843) 347-7111

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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.

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

201 services198 patients

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

122 services121 patients

Emergency department visit with low level of medical decision making 99283

An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.

22 services22 patients

Hospital Affiliations CMS Care Compare

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

Mcleod Loris Hospital

Acute Care Hospitals · Loris, SC

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420105

Location3655 Mitchell StreetLoris, SC 29569 · Horry County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01520 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

$90.70 typical visit price

range $58.86 – $177.36

Typical copayment $22.67 (range $14.71 – $44.34)

Most-billed visit code 99203

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.

Other Providers at the Same Location NPPES 10

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

MRS. KAREN-WHITLEY BISHOP PA

Physician Assistant