What is Vassilis Koliatsos's NPI number?

Vassilis Koliatsos's National Provider Identifier (NPI) is 1679623045, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Vassilis Koliatsos's specialty?

Vassilis Koliatsos is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Vassilis Koliatsos located?

Vassilis Koliatsos's practice location on file with NPPES is 6501 N Charles St, Baltimore, MD 21204-6819.

What is Vassilis Koliatsos's phone number?

The practice phone number listed in the NPPES registry for Vassilis Koliatsos is (410) 938-3000.

Does Vassilis Koliatsos accept Medicare?

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

Is Vassilis Koliatsos's NPI active?

Yes — Vassilis Koliatsos's NPI (1679623045) is active in the NPPES registry as of the last update on 2007-07-08.

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Vassilis Koliatsos, MD

NPI 1679623045 · Psychiatry Physician · Baltimore, MD

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

Vassilis Koliatsos, MD is a Psychiatry Physician provider in Baltimore, MD (NPI 1679623045).

Provider details

NPI number: 1679623045
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: D0047549 (MD)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense D0047549 (MD)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(72/100 index)

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

Registry tenure28% of score
19 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
261 Medicare services, 2024 (ranked within specialty)

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)
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	162	$147
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	73	$99
Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215	26	$182

Typical Medicare-allowed amounts for these services range $99–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Quetiapine Fumarate	121	14
Divalproex Sodium	90	14
Escitalopram Oxalate	77	11
Propranolol Hclbrand: Propranolol Hcl Er	57	11
Donepezil Hcl	54	12
Oxcarbazepine	49	—
Clonazepam	41	—

Practice location

6501 N Charles St

Baltimore, MD 21204-6819

Phone: (410) 938-3000

Fax: (410) 938-3410

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