Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DEMETRIUS PETER RIZOS DO
NPI 1063491397
Internal Medicine in Brookline, MA

Q: What is Demetrius Rizos's NPI number?

The NPI number for Demetrius Rizos is 1063491397. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Q: What is Demetrius Rizos's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Demetrius Rizos was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 13, 2006PECOS EnrolledAccepts Medicare Assignment

637 WASHINGTON ST STE 100, BROOKLINE, MA 02446(617) 798-1600(617) 798-1900 Get Directions Write a Review

NPPES record last updated: September 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 30, 2026, Dec 24, 2025, Dec 2, 2025 and 6 more (9 updates tracked since 2021).

On this page

About Demetrius Peter Rizos Do NPPES

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

DEMETRIUS PETER RIZOS DO (NPI 1063491397) is an individual internal medicine provider in Brookline, Massachusetts, licensed in Massachusetts (212775) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with St Vincent Healthcare, and is a graduate of Nova Southeastern College Of Osteo Medicine (1998).

NPPES Registry Identity

NPI1063491397

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDEMETRIUS PETER RIZOSCredential: DO

Location Address637 WASHINGTON ST STE 100Brookline, MA 02446-4579

Mailing Address637 Washington St Ste 100Brookline, MA 02446-4579 · (617) 798-1600 · Fax (617) 798-1900

Phone(617) 798-1600

Fax(617) 798-1900

Sole ProprietorNo

Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 1998

Enumeration DateJanuary 13, 2006

Last NPPES UpdateSeptember 30, 20269 updates tracked since enumeration

NPPES CertifiedSeptember 30, 2026

✔ NPI 1063491397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MA · 212775

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.

Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 212775 (MA)

637 WASHINGTON ST STE 100, Brookline, MA 02446

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

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

Demetrius Peter Rizos Do 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 ID648379180

PECOS Enrollment IDI20250513002067, I20251209003998

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 Demetrius Rizos reassigns Medicare billing to 14 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Vantage Healthcare LLC

11 mi

Internal Medicine

C/O WORKPLACE@45, 45 DAN RD
Canton, MA 02021

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

NPI 1366903551 (781) 867-2050

Prima Care, PC

44 mi

Clinic/Center

277 PLEASANT ST, 4TH FLOOR
Fall River, MA 02721

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

NPI 1265422596 (508) 676-3292

Berkshire Medical Center, Inc

109 mi

General Acute Care Hospital

725 NORTH ST
Pittsfield, MA 01201

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

NPI 1295765261 (413) 447-2000

Upstate Ny Doctor Of Medicine PLLC

163 mi

Hospitalist

427 GUY PARK AVE
Amsterdam, NY 12010

Reassigned Medicare billing, New York enrollment
63 clinicians in this Medicare group

NPI 1356171490 (518) 842-1900

Pittsburgh Kidney Care LLC

478 mi

Nephrology

575 COAL VALLEY RD STE 204
Clairton, PA 15025

Reassigned Medicare billing, Pennsylvania enrollment
17 clinicians in this Medicare group

NPI 1699122069 (412) 466-2220

Vidant Medical Group LLC

574 mi

Multi-Specialty

2100 STANTONSBURG RD
Greenville, NC 27834

Reassigned Medicare billing, North Carolina enrollment
1,653 clinicians in this Medicare group

NPI 1477648731 (252) 847-2181

St. Claire Medical Center,inc

692 mi

Rural Health

390 KY HWY 7 SOUTH
Sandy Hook, KY 41171

Reassigned Medicare billing, Kentucky enrollment
296 clinicians in this Medicare group

NPI 1447212493 (606) 738-5155

Hospital Medicine Services Of Tennessee PC

755 mi

Hospitalist

600 WILSON CREEK RD
Lawrenceburg, IN 47025

Reassigned Medicare billing, Kentucky enrollment
106 clinicians in this Medicare group

NPI 1528433802 (812) 537-1010

Cogent Healthcare Of Kentucky, Psc

767 mi

Internal Medicine

1 SAINT JOSEPH DR
Lexington, KY 40504

Reassigned Medicare billing, Kentucky enrollment
236 clinicians in this Medicare group

NPI 1053362293 (859) 313-1000

Southeastern Physician Services PC

826 mi

Hospitalist

990 OAK RIDGE TPKE
Oak Ridge, TN 37830

Reassigned Medicare billing, Kentucky enrollment
358 clinicians in this Medicare group

NPI 1083835441 (865) 481-1000

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 7

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 nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

41 services40 patients

Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99304

An initial nursing facility visit is a daily check-up to monitor your health status. This service, lasting typically 25 minutes, involves a nurse assessing your overall wellbeing, discussing concerns, and updating your care plan as needed.

40 services40 patients

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

20 services20 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes 99307

A follow-up nursing facility visit per day typically lasts about 10 minutes. This service involves a healthcare professional checking on your health status, answering any questions you may have, and monitoring your progress. This routine check ensures your recovery is on track and any concerns are addressed promptly.

17 services16 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes 99307

17 services16 patients

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310

A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.

13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

St Vincent Healthcare

Acute Care Hospitals · Billings, MT

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number270049

Location1233 N 30th StBillings, MT 59101 · Yellowstone County

Emergency services Birthing friendly

Holy Rosary Healthcare

Critical Access Hospitals · Miles City, MT

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number271347

Location2600 Wilson StMiles City, MT 59301 · Custer County

Emergency services Birthing friendly

Uniontown Hospital

Acute Care Hospitals · Uniontown, PA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390041

Location500 West Berkeley StreetUniontown, PA 15401 · Fayette County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02446 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

$144.11 typical visit price

range $63.72 – $189.86

Typical copayment $36.02 (range $15.93 – $47.46)

Most-billed visit code 99204

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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.

Referred Medical Equipment & Supplies CMS DME claims 24

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

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

2 suppliers14 claims14 services$111.68 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

1 supplier11 claims11 services$38.25 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

2 suppliers21 claims21 services$202.72 avg. paid by Medicare

Tlso, flexible, provides trunk support, thoracic region, rigid posterior panel and soft anterior apron, extends from the sacrococcygeal junction and terminates just inferior to the scapular spine, restricts gross trunk motion in the sagittal plane, produces intracavitary pressure to reduce load on the intervertebral disks, includes straps and closures, prefabricated, off-the-shelf L0457

DME-Orthotic Devices · category DF000N

9 suppliers86 claims86 services$632.89 avg. paid by Medicare

Lumbar-sacral orthosis, sagittal control, with rigid anterior and posterior panels, posterior extends from sacrococcygeal junction to t-9 vertebra, produces intracavitary pressure to reduce load on the intervertebral discs, includes straps, closures, may include padding, shoulder straps, pendulous abdomen design, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L0631

DME-Orthotic Devices · category DF007N

3 suppliers83 claims83 services$835.41 avg. paid by Medicare

Lumbar-sacral orthosis, sagittal-coronal control, with rigid anterior and posterior frame/panels, posterior extends from sacrococcygeal junction to t-9 vertebra, lateral strength provided by rigid lateral frame/panels, produces intracavitary pressure to reduce load on intervertebral discs, includes straps, closures, may include padding, shoulder straps, pendulous abdomen design, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L0637

DME-Orthotic Devices · category DF007N

5 suppliers402 claims402 services$966.64 avg. paid by Medicare

Lumbar-sacral orthosis, sagittal-coronal control, rigid shell(s)/panel(s), posterior extends from sacrococcygeal junction to t-9 vertebra, anterior extends from symphysis pubis to xyphoid, produces intracavitary pressure to reduce load on the intervertebral discs, overall strength is provided by overlapping rigid material and stabilizing closures, includes straps, closures, may include soft interface, pendulous abdomen design, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L0639

DME-Orthotic Devices · category DF007N

3 suppliers72 claims72 services$995.52 avg. paid by Medicare

DME-Orthotic Devices · category DF007N

3 suppliers57 claims57 services$628.91 avg. paid by Medicare

Lumbar-sacral orthosis, sagittal-coronal control, with rigid anterior and posterior frame/panel(s), posterior extends from sacrococcygeal junction to t-9 vertebra, lateral strength provided by rigid lateral frame/panel(s), produces intracavitary pressure to reduce load on intervertebral discs, includes straps, closures, may include padding, shoulder straps, pendulous abdomen design, prefabricated, off-the-shelf L0650

DME-Orthotic Devices · category DF007N

22 suppliers232 claims232 services$784.17 avg. paid by Medicare

DME-Orthotic Devices · category DF007N

7 suppliers176 claims176 services$782.06 avg. paid by Medicare

Knee orthosis, adjustable knee joints (unicentric or polycentric), positional orthosis, rigid support, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L1832

DME-Orthotic Devices · category DF011N

1 supplier26 claims39 services$563.79 avg. paid by Medicare

Knee orthosis, adjustable knee joints (unicentric or polycentric), positional orthosis, rigid support, prefabricated, off-the shelf L1833

DME-Orthotic Devices · category DF011N

10 suppliers124 claims169 services$436.96 avg. paid by Medicare

Knee orthosis, single upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L1843

DME-Orthotic Devices · category DF011N

5 suppliers361 claims680 services$737.39 avg. paid by Medicare

Knee orthosis, double upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L1845

DME-Orthotic Devices · category DF011N

3 suppliers87 claims170 services$683.59 avg. paid by Medicare

Knee orthosis (ko), single upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated, off-the-shelf L1851

DME-Orthotic Devices · category DF011N

11 suppliers132 claims258 services$609.08 avg. paid by Medicare

Knee orthosis (ko), double upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated, off-the-shelf L1852

DME-Orthotic Devices · category DF011N

9 suppliers224 claims425 services$569.27 avg. paid by Medicare

Ankle foot orthosis, multiligamentous ankle support, prefabricated, off-the-shelf L1906

DME-Orthotic Devices · category DF003N

8 suppliers118 claims174 services$96.35 avg. paid by Medicare

Ankle foot orthosis, plastic or other material with ankle joint, prefabricated, includes fitting and adjustment L1971

DME-Orthotic Devices · category DF003N

6 suppliers90 claims139 services$382.28 avg. paid by Medicare

Addition to lower extremity orthosis, suspension sleeve L2397

DME-Orthotic Devices · category DF000N

24 suppliers903 claims1,694 services$99.07 avg. paid by Medicare

Foot, plastic, silicone or equal, heel stabilizer, prefabricated, off-the-shelf, each L3170

DME-Orthotic Devices · category DF000N

5 suppliers20 claims33 services$42.05 avg. paid by Medicare

Shoulder orthosis, acromio/clavicular (canvas and webbing type), prefabricated, off-the-shelf L3670

DME-Orthotic Devices · category DF000N

3 suppliers22 claims22 services$99.29 avg. paid by Medicare

Elbow orthosis (eo), with adjustable position locking joint(s), prefabricated, off-the-shelf L3761

DME-Orthotic Devices · category DF000N

4 suppliers62 claims86 services$374.82 avg. paid by Medicare

Wrist hand orthosis, includes one or more nontorsion joint(s), elastic bands, turnbuckles, may include soft interface, straps, prefabricated, off-the-shelf L3916

DME-Orthotic Devices · category DF000N

24 suppliers612 claims1,036 services$395.64 avg. paid by Medicare

Shoulder elbow wrist hand orthosis, abduction positioning, airplane design, prefabricated, includes fitting and adjustment L3960

DME-Orthotic Devices · category DF000N

3 suppliers94 claims94 services$627.98 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Demetrius Rizos's NPI number?

The NPI number for Demetrius Rizos is 1063491397. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Where is Demetrius Rizos located?

Demetrius Rizos practices at 637 Washington St Ste 100, Brookline, MA 02446. The listed phone number is (617) 798-1600.

What is Demetrius Rizos's specialty?

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

Is Demetrius Rizos enrolled in Medicare?

Yes. Demetrius Rizos 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.

Which organizations bill Medicare for Demetrius Rizos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Demetrius Rizos reassigns Medicare benefits to 14 organizations: Vantage Healthcare LLC (Canton, MA), Prima Care, PC (Fall River, MA), Berkshire Medical Center, Inc (Pittsfield, MA), Upstate Ny Doctor Of Medicine PLLC (Amsterdam, NY), Pittsburgh Kidney Care LLC (Clairton, PA) and 9 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Demetrius Rizos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Demetrius Rizos accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan, Blue Cross and Blue Shield of Montana and CareSource (Common Ground Healthcare) and 4 other insurers list Demetrius Rizos as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Demetrius Rizos affiliated with any hospitals?

According to CMS data, Demetrius Rizos is affiliated with St Vincent Healthcare, Holy Rosary Healthcare and Uniontown Hospital.

When was this NPI record last updated?

The NPPES record for Demetrius Rizos was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.