2026 NPPES data Psychiatry Physician NPI 1891809109 M.D.
Verify on CMS →

KRISTOPHER BJORNSON, M.D.

Psychiatry Physician in HALEIWA, Hawaii. 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
297
Medicare Part D claims · 37 beneficiaries · Psychiatry Physician avg: 1K

What the federal data shows

KRISTOPHER BJORNSON, M.D. filed 297 Medicare Part D claims in 2023 as a Psychiatry Physician in HALEIWA, Hawaii.

297
Part D claims, 2023

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.

KRISTOPHER BJORNSON, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

297 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-eligible specialty (heuristic — not verified)

KRISTOPHER BJORNSON, M.D. 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 KRISTOPHER BJORNSON, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/17/2006

NPI 1891809109

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

297 71% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Hawaii

How Psychiatry Physician compares to other specialties among Hawaii providers

Hawaii providers

Psychiatry Physician share within Hawaii

1. Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatry Physician share within Hawaii

Specialty board-certification context

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

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

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

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

KRISTOPHER BJORNSON, M.D. is a Psychiatry Physician provider practicing in HALEIWA, Hawaii, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1891809109. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

KRISTOPHER BJORNSON, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 66-125 KAMEHAMEHA HWY, HALEIWA, HI, 96712, with a listed phone of (808) 637-5111. NPI 1891809109 was issued on 08/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BJORNSON 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 297 prescription claims written by this provider, covering 37 Medicare beneficiaries and totaling roughly $60K in drug spend. 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

66-125 KAMEHAMEHA HWY
HALEIWA, HI 96712

Provider Details

NPI 1891809109
Specialty Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 08/17/2006

Medicare Part D Prescribing Data

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

297
Total Claims
$60K
Total Drug Cost
37
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
603
Total Day Supply
18,057
Generic Drug Cost
$41K

Patient Demographics

Average Patient Age
70.4 years
Avg HCC Risk Score
1.17

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Escitalopram Oxalate
49
Alprazolam
30
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
25
Mirtazapine
24
Venlafaxine Hcl Er
Venlafaxine Hcl
24
Bupropion Xl
Bupropion Hcl
20
Clonazepam
20
Lurasidone Hcl
18

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

Psychiatry Physician Overview

How KRISTOPHER BJORNSON, M.D. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

KRISTOPHER BJORNSON, M.D.'s 297 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Hawaii

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

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KRISTOPHER BJORNSON, M.D.'s specialty?
KRISTOPHER BJORNSON, M.D. specializes in Psychiatry Physician and practices in HALEIWA, Hawaii. Credentials: M.D..
How much does KRISTOPHER BJORNSON, M.D. prescribe under Medicare Part D?
In 2023, KRISTOPHER BJORNSON, M.D. wrote 297 Medicare Part D claims totaling $60K in drug costs for 37 beneficiaries.
Where is KRISTOPHER BJORNSON, M.D. located?
KRISTOPHER BJORNSON, M.D. is located at 66-125 KAMEHAMEHA HWY, HALEIWA, HI, 96712. Phone: (808) 637-5111.
What is KRISTOPHER BJORNSON, M.D.'s NPI number?
KRISTOPHER BJORNSON, M.D.'s National Provider Identifier (NPI) is 1891809109, issued on 08/17/2006.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does KRISTOPHER BJORNSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KRISTOPHER BJORNSON, M.D.'s most frequently prescribed drugs include Escitalopram Oxalate, Alprazolam, Buprenorphine-Naloxone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KRISTOPHER BJORNSON, M.D. accept Medicare?
KRISTOPHER BJORNSON, M.D. appears in CMS Medicare data with 297 Part D claims and 37 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KRISTOPHER BJORNSON, M.D.'s credentials?
KRISTOPHER BJORNSON, M.D.'s NPI is 1891809109 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