2026 NPPES data Addiction Medicine (Internal Medicine) Physician NPI 1881639375 MD
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SERGEY ZHITAR, MD

Addiction Medicine (Internal Medicine) Physician in VIRGINIA BEACH, Virginia. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
978
Medicare Part D claims · 67 beneficiaries · Addiction Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SERGEY ZHITAR, MD filed 978 Medicare Part D claims in 2023 as a Addiction Medicine (Internal Medicine) Physician in VIRGINIA BEACH, Virginia, prescribing 91% generic.

978
Part D claims, 2023
91%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

SERGEY ZHITAR, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

978 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

SERGEY ZHITAR, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about SERGEY ZHITAR, MD?

Quality data not reported

NPI registry status

Active

Issued 06/18/2006

NPI 1881639375

Primary specialty

Addiction Medicine (Internal Medicine) Physician

Niche

553 US NPIs in this specialty

Medicare Part D claims

978 30% vs specialty avg

2023 prescription claims

Specialty avg: 1,403

Specialty distribution in Virginia

How Addiction Medicine (Internal Medicine) Physician compares to other specialties among Virginia providers

Virginia providers

Addiction Medicine (Internal Medicine) Physician share within Virginia

1. Addiction Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Internal Medicine) Physician share within Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Addiction Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Addiction Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

SERGEY ZHITAR, MD appears in the CMS NPPES registry as a Addiction Medicine (Internal Medicine) Physician provider holding MD credentials at 101 N LYNNHAVEN RD, VIRGINIA BEACH, VA, 23452, with a listed phone of (757) 264-9957. NPI 1881639375 was issued on 06/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ZHITAR most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 978 prescription claims written by this provider, covering 67 Medicare beneficiaries and totaling roughly $78K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 46.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Addiction Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 553 enrolled providers across 46 states and an average of 1,403 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

101 N LYNNHAVEN RD
VIRGINIA BEACH, VA 23452

Provider Details

NPI 1881639375
Specialty Addiction Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 06/18/2006

Brand vs generic prescribing mix · Generic-heavy

SERGEY ZHITAR, MD — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 978 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

978
Total Claims
$78K
Total Drug Cost
67
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,009
Total Day Supply
26,239
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$34K
Generic Drug Cost
$45K
Opioid Claims
453 (46.3% rate)

Patient Demographics

Average Patient Age
65.6 years
Avg HCC Risk Score
1.88
Gender Split
63% female / 37% male
Age Distribution
<65: 28, 65-74: 27, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What SERGEY ZHITAR, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
125
Oxycodone Hcl
115
Pregabalin
102
Gabapentin
77
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
75
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
72
Cyclobenzaprine Hcl
38
Naloxone Hcl
32
Belbuca
Buprenorphine Hcl
25
Celecoxib
24

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Addiction Medicine (Internal Medicine) Physician Overview

How SERGEY ZHITAR, MD fits within the Addiction Medicine (Internal Medicine) Physician landscape nationally.

553
Addiction Medicine (Internal Medicine) Physician Providers in US
46
States with Addiction Medicine (Internal Medicine) Physician
1,403
Avg Claims per Provider

SERGEY ZHITAR, MD's 978 claims are below the specialty average of 1,403.

Nearby Addiction Medicine (Internal Medicine) Physician Providers in Virginia

Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as ZHITAR.

Compare Addiction Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SERGEY ZHITAR, MD's specialty?
SERGEY ZHITAR, MD specializes in Addiction Medicine (Internal Medicine) Physician and practices in VIRGINIA BEACH, Virginia. Credentials: MD.
How much does SERGEY ZHITAR, MD prescribe under Medicare Part D?
In 2023, SERGEY ZHITAR, MD wrote 978 Medicare Part D claims totaling $78K in drug costs for 67 beneficiaries.
Where is SERGEY ZHITAR, MD located?
SERGEY ZHITAR, MD is located at 101 N LYNNHAVEN RD, VIRGINIA BEACH, VA, 23452. Phone: (757) 264-9957.
What is SERGEY ZHITAR, MD's NPI number?
SERGEY ZHITAR, MD's National Provider Identifier (NPI) is 1881639375, issued on 06/18/2006.
Does SERGEY ZHITAR, MD prescribe more brand-name or generic drugs?
SERGEY ZHITAR, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $34K in brand drug costs.
Does SERGEY ZHITAR, MD prescribe opioids?
Yes, SERGEY ZHITAR, MD had 453 opioid claims in 2023 with an opioid prescribing rate of 46.3%.
How many Addiction Medicine (Internal Medicine) Physician providers are there in the US?
There are 553 Addiction Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Addiction Medicine (Internal Medicine) Physician provider writes 1,403 Medicare Part D claims per year.
What drugs does SERGEY ZHITAR, MD prescribe most often?
Based on 2023 Medicare Part D data, SERGEY ZHITAR, MD's most frequently prescribed drugs include Oxycodone-Acetaminophen, Oxycodone Hcl, Pregabalin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SERGEY ZHITAR, MD accept Medicare?
SERGEY ZHITAR, MD appears in CMS Medicare data with 978 Part D claims and 67 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SERGEY ZHITAR, MD's credentials?
SERGEY ZHITAR, MD's NPI is 1881639375 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology