What is Julian Vassay's NPI number?

Julian Vassay's National Provider Identifier (NPI) is 1003922782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Julian Vassay's specialty?

Julian Vassay is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Julian Vassay located?

Julian Vassay's practice location on file with NPPES is 101 Professional Plaza, Mattoon, IL 61938.

What is Julian Vassay's phone number?

The practice phone number listed in the NPPES registry for Julian Vassay is (217) 258-2110.

Does Julian Vassay accept Medicare?

Julian Vassay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Julian Vassay's NPI active?

Yes — Julian Vassay's NPI (1003922782) is active in the NPPES registry as of the last update on 2019-01-08.

IndividualActiveAccepts Medicare

Julian Vassay, M.D.

NPI 1003922782 · Internal Medicine Physician · Mattoon, IL

Julian Vassay, M.D. is a Internal Medicine Physician provider in Mattoon, IL (NPI 1003922782).

Provider details

NPI number: 1003922782
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 036-092334 (IL)

Practice location

101 Professional Plaza

Mattoon, IL 61938

Phone: (217) 258-2110

Fax: (217) 238-3434

Approximate (ZIP-level) locationGet directions

More IL providers

Mailing address

1005 Health Center Dr Ste 201

Mattoon, IL 61938-4693

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 036-092334 (IL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(80/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
1,068 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211	286	$16
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	233	$125
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	146	$89
Injection of Drug Or Substance Under Skin Or Into Muscle96372	117	$14
Administration of Influenza Virus VaccineG0008	60	$31
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 151 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	721	184
Amlodipine Besylate	516	119
Losartan Potassium	368	93
Levothyroxine Sodium	354	84
Lisinopril	349	81
Pantoprazole Sodium	278	72
Metformin Hcl

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$534 across 31 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-08-22
Last updated: 2019-01-08

Frequently asked questions

What is Julian Vassay's NPI number?: Julian Vassay's National Provider Identifier (NPI) is 1003922782, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Julian Vassay's specialty?: Julian Vassay is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Julian Vassay located?: Julian Vassay's practice location on file with NPPES is 101 Professional Plaza, Mattoon, IL 61938.
What is Julian Vassay's phone number?: The practice phone number listed in the NPPES registry for Julian Vassay is (217) 258-2110.
Does Julian Vassay accept Medicare?: Julian Vassay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Julian Vassay's NPI active?: Yes — Julian Vassay's NPI (1003922782) is active in the NPPES registry as of the last update on 2019-01-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211	286	$16
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	233	$125
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	146	$89
Injection of Drug Or Substance Under Skin Or Into Muscle96372	117	$14
Administration of Influenza Virus VaccineG0008	60	$31
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More