What is Dimitrios Hatzivlassiou's NPI number?

Dimitrios Hatzivlassiou's National Provider Identifier (NPI) is 1992769400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Dimitrios Hatzivlassiou's specialty?

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

Where is Dimitrios Hatzivlassiou located?

Dimitrios Hatzivlassiou's practice location on file with NPPES is 2400 S Hwy 27, Clermont, FL 34711-6816.

What is Dimitrios Hatzivlassiou's phone number?

The practice phone number listed in the NPPES registry for Dimitrios Hatzivlassiou is (352) 353-0557.

Does Dimitrios Hatzivlassiou accept Medicare?

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

Is Dimitrios Hatzivlassiou's NPI active?

Yes — Dimitrios Hatzivlassiou's NPI (1992769400) is active in the NPPES registry as of the last update on 2023-03-07.

IndividualActiveAccepts Medicare

Dimitrios Hatzivlassiou, MD, PHD

NPI 1992769400 · Psychiatry Physician · Clermont, FL

Dimitrios Hatzivlassiou, MD, PHD is a Psychiatry Physician provider in Clermont, FL (NPI 1992769400).

Provider details

NPI number: 1992769400
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD, PHD
Sex: Male
Sole proprietor: No
License: ME 84252 (FL)

Practice location

2400 S Hwy 27

Suite 4309

Clermont, FL 34711-6816

Phone: (352) 353-0557

Street-level locationGet directions

More FL providers

Mailing address

2400 S Hwy 27

Clermont, FL 34711-6816

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense ME 84252 (FL)
Allopathic & Osteopathic Physicians

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

Profile Score

Detailed profile(85/100 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
593 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)
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	308	$104
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	228	$105
Psychiatric Diagnostic Evaluation With Medical Services90792	37	$168
Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349	20	$124

Typical Medicare-allowed amounts for these services range $104–$168 (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 · 19 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Lorazepam	119	21
Escitalopram Oxalate	92	31
Trazodone Hcl	65	24
Memantine Hcl	47	—
Quetiapine Fumarate	36	14
Clonazepam	32	—
Divalproex Sodium	29	—

Transparency — industry payments

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

$20 across 1 record (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: 2006-04-12
Last updated: 2023-03-07

Frequently asked questions

What is Dimitrios Hatzivlassiou's NPI number?: Dimitrios Hatzivlassiou's National Provider Identifier (NPI) is 1992769400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Dimitrios Hatzivlassiou's specialty?: Dimitrios Hatzivlassiou is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
Where is Dimitrios Hatzivlassiou located?: Dimitrios Hatzivlassiou's practice location on file with NPPES is 2400 S Hwy 27, Clermont, FL 34711-6816.
What is Dimitrios Hatzivlassiou's phone number?: The practice phone number listed in the NPPES registry for Dimitrios Hatzivlassiou is (352) 353-0557.
Does Dimitrios Hatzivlassiou accept Medicare?: Dimitrios Hatzivlassiou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Dimitrios Hatzivlassiou's NPI active?: Yes — Dimitrios Hatzivlassiou's NPI (1992769400) is active in the NPPES registry as of the last update on 2023-03-07.

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)
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	308	$104
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	228	$105
Psychiatric Diagnostic Evaluation With Medical Services90792	37	$168
Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349	20	$124

Drug

Part D claims (2024)

Beneficiaries

Lorazepam

119

Escitalopram Oxalate

Trazodone Hcl

Memantine Hcl

—

Quetiapine Fumarate

Clonazepam

—

Divalproex Sodium

—

Transparency — industry payments

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

$20 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments