DR. RALPH R DIMATTIA MD
NPI 1013985068
Internal Medicine in Williamsburg, VA

Q: What is Ralph Dimattia's NPI number?

The NPI number for Ralph Dimattia is 1013985068. It was assigned to this individual provider in the NPPES registry on March 8, 2006.

Q: What is Ralph Dimattia'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 Ralph Dimattia was last updated on September 12, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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 March 08, 2006PECOS Enrolled

95.11/100

CMS Quality Rating

100 SENTARA CIR, WILLIAMSBURG, VA 23188(757) 984-7218(757) 984-7210 Get Directions Write a Review

NPPES record last updated: September 12, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Ralph R Dimattia Md NPPES

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

DR. RALPH R DIMATTIA MD (NPI 1013985068) is an individual internal medicine provider in Williamsburg, Virginia, licensed in Virginia (0101036830) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013985068

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. RALPH R DIMATTIACredential: MD

Location Address100 SENTARA CIRWilliamsburg, VA 23188-5713

Mailing Address100 Sentara CirWilliamsburg, VA 23188-5713 · (757) 984-7218 · Fax (757) 984-7210

Phone(757) 984-7218

Fax(757) 984-7210

Sole ProprietorNo

Enumeration DateMarch 8, 2006

Last NPPES UpdateSeptember 12, 2013

✔ NPI 1013985068 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in VA · 0101036830

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.

100 SENTARA CIR, Williamsburg, VA 23188

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Other Identifiers 3

Medicare ID-Type Unspecified002938S33VA

Medicare UPINB84629

Medicaid010026253VA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ralph R Dimattia Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Ralph Dimattia reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sentara Medical Group

45 mi

Family Medicine

824 N MILITARY HWY STE 100
Norfolk, VA 23502

Reassigned Medicare billing, Virginia enrollment
1,901 clinicians in this Medicare group

NPI 1265485270 (757) 252-2900

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.

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.

40 services22 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.

38 services26 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.

15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23188 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

$129.04 typical visit price

range $56.19 – $170.30

Typical copayment $32.26 (range $14.04 – $42.57)

Most-billed visit code 99204

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

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.

95.11/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

86.31

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier43 claims43 services$14.52 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

1 supplier43 claims43 services$67.36 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.

LIU LIU WITTGES

Specialist/Technologist, Other (Surgical Assistant)