2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1689606303 D.O.
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ANTHONY HERICKS, D.O.

Critical Care Medicine (Internal Medicine) Physician in SIOUX FALLS, South Dakota. 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
2K
Medicare Part D claims · 225 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
50%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANTHONY HERICKS, D.O. filed 1,514 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in SIOUX FALLS, South Dakota, prescribing 50% generic.

2K
Part D claims, 2023
50%
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.

ANTHONY HERICKS, D.O.'s Medicare Part D volume vs every U.S. prescriber

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

1,514 Top 19% higher than 81% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 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)

ANTHONY HERICKS, D.O. 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 ANTHONY HERICKS, D.O.?

Quality data not reported

NPI registry status

Active

Issued 07/06/2006

NPI 1689606303

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

1,514 42% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in South Dakota

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among South Dakota providers

South Dakota providers

Critical Care Medicine (Internal Medicine) Physician share within South Dakota

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within South Dakota

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Critical Care 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).

ANTHONY HERICKS, D.O. appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding D.O. credentials at 810 E 23RD ST STE 300, SIOUX FALLS, SD, 57105, with a listed phone of (605) 322-6930. NPI 1689606303 was issued on 07/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HERICKS 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 1,514 prescription claims written by this provider, covering 225 Medicare beneficiaries and totaling roughly $928K in drug spend, split 50% brand-name and 50% 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.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

810 E 23RD ST STE 300
SIOUX FALLS, SD 57105

Provider Details

NPI 1689606303
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials D.O.
Gender Male
NPI Issued 07/06/2006

Hospital and facility affiliations

Facilities where ANTHONY HERICKS, D.O. 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 · Brand-heavy

ANTHONY HERICKS, D.O. — brand share 50.0%
Specialty average (est.)

50% brand-name claims vs 50% generic, on 1,514 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.

1,514
Total Claims
$928K
Total Drug Cost
225
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,006
Total Day Supply
53,667
Brand vs Generic
50% brand / 50% generic
Brand Drug Cost
$879K
Antibiotic Claims
117

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
1.63
Gender Split
54% female / 46% male
Age Distribution
<65: 25, 65-74: 87, 75-84: 96, 85+: 17

Top Prescribed Drugs (Medicare Part D)

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

What ANTHONY HERICKS, D.O. 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
Montelukast Sodium
131
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
130
Albuterol Sulfate Hfa
Albuterol Sulfate
120
Prednisone
120
Symbicort
Budesonide/Formoterol Fumarate
113
Breo Ellipta
Fluticasone/Vilanterol
96
Spiriva Respimat
Tiotropium Bromide
72
Omeprazole
61
Zolpidem Tartrate
43
Ventolin Hfa
Albuterol Sulfate
40

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

Critical Care Medicine (Internal Medicine) Physician Overview

How ANTHONY HERICKS, D.O. fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

ANTHONY HERICKS, D.O.'s 1,514 claims are above the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in South Dakota

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

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

Frequently Asked Questions

What is ANTHONY HERICKS, D.O.'s specialty?
ANTHONY HERICKS, D.O. specializes in Critical Care Medicine (Internal Medicine) Physician and practices in SIOUX FALLS, South Dakota. Credentials: D.O..
How much does ANTHONY HERICKS, D.O. prescribe under Medicare Part D?
In 2023, ANTHONY HERICKS, D.O. wrote 1,514 Medicare Part D claims totaling $928K in drug costs for 225 beneficiaries.
Where is ANTHONY HERICKS, D.O. located?
ANTHONY HERICKS, D.O. is located at 810 E 23RD ST STE 300, SIOUX FALLS, SD, 57105. Phone: (605) 322-6930.
What is ANTHONY HERICKS, D.O.'s NPI number?
ANTHONY HERICKS, D.O.'s National Provider Identifier (NPI) is 1689606303, issued on 07/06/2006.
Does ANTHONY HERICKS, D.O. prescribe more brand-name or generic drugs?
ANTHONY HERICKS, D.O.'s prescribing is 50% brand-name and 50% generic drugs by claim count, with $879K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does ANTHONY HERICKS, D.O. prescribe most often?
Based on 2023 Medicare Part D data, ANTHONY HERICKS, D.O.'s most frequently prescribed drugs include Montelukast Sodium, Trelegy Ellipta, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANTHONY HERICKS, D.O. accept Medicare?
ANTHONY HERICKS, D.O. appears in CMS Medicare data with 1,514 Part D claims and 225 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANTHONY HERICKS, D.O.'s credentials?
ANTHONY HERICKS, D.O.'s NPI is 1689606303 with credentials D.O.. 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