2026 NPPES data Child & Adolescent Psychiatry Physician NPI 1548233091 M.D.
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Tamara Vik, M.D.

Child & Adolescent Psychiatry Physician in Sioux Falls, South Dakota. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 6,160 in Child & Adolescent Psychiatry Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
231
Medicare Part D claims · Child & Adolescent Psychiatry Physician avg: 600
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Tamara Vik, M.D. filed 231 Medicare Part D claims in 2023 as a Child & Adolescent Psychiatry Physician in Sioux Falls, South Dakota, prescribing 91% generic.

231
Part D claims, 2023
91%
generic prescribing
Likely
board-certified (heuristic)

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.

Tamara Vik, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

231 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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 certification likely (heuristic — not verified)

Tamara Vik, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Tamara Vik, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/07/2006

NPI 1548233091

Primary specialty

Child & Adolescent Psychiatry Physician

Mid-sized

6,160 US NPIs in this specialty

Medicare Part D claims

231 61% vs specialty avg

2023 prescription claims

Specialty avg: 600

Specialty distribution in South Dakota

How Child & Adolescent Psychiatry Physician compares to other specialties among South Dakota providers

South Dakota providers

Largest specialties in South Dakota (% of in-state providers)

Physical Therapist — 5.6%Physical Therapist5.6%Pharmacist — 5.5%Pharmacist5.5%Registered Nurse — 4.8%Registered Nurse4.8%Family Nurse Practitioner — 4.7%Family Nurse Practitioner4.7%Mental Health Counselor — 4%Mental Health Counselor4%Physician Assistant — 3.7%Physician Assistant3.7%Child & Adolescent Psychiatry Physician — 0.1%Child & Adolescent Psychiatry Physician0.1%
Largest specialties in South Dakota (% of in-state providers)

Specialty board-certification context

Estimated specialty board-certified rate — Child & Adolescent Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Child & Adolescent Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Child & Adolescent Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Child & Adolescent Psychiatry 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).

Tamara Vik, M.D. appears in the CMS NPPES registry as a Child & Adolescent Psychiatry Physician provider holding M.D. credentials at 4400 W 69TH ST, Sioux Falls, SD, 57108, with a listed phone of (605) 322-5700. NPI 1548233091 was issued on 02/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Vik 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 231 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $18K in drug spend, split 9% brand-name and 91% generic by claim count. 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.

Child & Adolescent Psychiatry Physician is a mid-sized specialty nationwide, with 6,160 enrolled providers across 54 states and an average of 600 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

4400 W 69TH ST
Sioux Falls, SD 57108

Provider Details

NPI 1548233091
Specialty Child & Adolescent Psychiatry Physician
Credentials M.D.
Gender Female
NPI Issued 02/07/2006

Hospital and facility affiliations

Facilities where Tamara Vik, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Avera Mckennan
Sioux Falls, SD

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

Tamara Vik, M.D. — brand share 9.0%
Child & Adolescent Psychiatry Physician average

9% brand-name claims vs 91% generic, on 231 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.

231
Total Claims
$18K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
231
Total Day Supply
6,778
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$8K
Generic Drug Cost
$9K

Patient Demographics

Average Patient Age
40.3 years
Avg HCC Risk Score
0.58

Top Prescribed Drugs (Medicare Part D)

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

What Tamara Vik, M.D. 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
Fluoxetine Hcl
63
Trazodone Hcl
25
Risperidone
23
Vyvanse
Lisdexamfetamine Dimesylate
20
Levothyroxine Sodium
13
Clonidine Hcl
12
Dextroamphetamine-Amphet Er
Dextroamphetamine/Amphetamine
12
Duloxetine Hcl
12
Guanfacine Hcl Er
Guanfacine Hcl
11
Methylphenidate Er
Methylphenidate Hcl
11

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

Child & Adolescent Psychiatry Physician Overview

How Tamara Vik, M.D. fits within the Child & Adolescent Psychiatry Physician landscape nationally.

6,160
Child & Adolescent Psychiatry Physician Providers in US
54
States with Child & Adolescent Psychiatry Physician
600
Avg Claims per Provider

Tamara Vik, M.D.'s 231 claims are below the specialty average of 600.

Nearby Child & Adolescent Psychiatry Physician Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Vik.

Compare Child & Adolescent Psychiatry Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the South Dakota medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Child & Adolescent Psychiatry Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Tamara Vik, M.D.'s specialty?
Tamara Vik, M.D. specializes in Child & Adolescent Psychiatry Physician and practices in Sioux Falls, South Dakota. Credentials: M.D..
How much does Tamara Vik, M.D. prescribe under Medicare Part D?
In 2023, Tamara Vik, M.D. wrote 231 Medicare Part D claims totaling $18K in drug costs for N/A beneficiaries.
Where is Tamara Vik, M.D. located?
Tamara Vik, M.D. is located at 4400 W 69TH ST, Sioux Falls, SD, 57108. Phone: (605) 322-5700.
What is Tamara Vik, M.D.'s NPI number?
Tamara Vik, M.D.'s National Provider Identifier (NPI) is 1548233091, issued on 02/07/2006.
Does Tamara Vik, M.D. prescribe more brand-name or generic drugs?
Tamara Vik, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $8K in brand drug costs.
How many Child & Adolescent Psychiatry Physician providers are there in the US?
There are 6,160 Child & Adolescent Psychiatry Physician providers across 54 states in the US. The average Child & Adolescent Psychiatry Physician provider writes 600 Medicare Part D claims per year.
What drugs does Tamara Vik, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Tamara Vik, M.D.'s most frequently prescribed drugs include Fluoxetine Hcl, Trazodone Hcl, Risperidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tamara Vik, M.D. accept Medicare?
Tamara Vik, M.D. appears in CMS Medicare data with 231 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tamara Vik, M.D.'s credentials?
Tamara Vik, M.D.'s NPI is 1548233091 with credentials M.D.. 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

Compiled from official public sources by the PlainDoctor editorial team.