2026 NPPES data Hospitalist Physician NPI 1114287828 MD
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Joshua Starbuck, MD

Hospitalist Physician in Makawao, Hawaii. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,825 in Hospitalist 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
362
Medicare Part D claims · 38 beneficiaries · Hospitalist Physician avg: 888
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Joshua Starbuck, MD filed 362 Medicare Part D claims in 2023 as a Hospitalist Physician in Makawao, Hawaii.

362
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.

Joshua Starbuck, MD's Medicare Part D volume vs every U.S. prescriber

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

362 Top 43% higher than 57% 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. 2K+: 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)

Joshua Starbuck, 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 Joshua Starbuck, MD?

Quality data not reported

NPI registry status

Active

Issued 05/29/2012

NPI 1114287828

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

362 59% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Hawaii

How Hospitalist Physician compares to other specialties among Hawaii providers

Hawaii providers

Largest specialties in Hawaii (% of in-state providers)

Behavior Technician - 16.4%Behavior Technician16.4%Massage Therapist - 4.3%Massage Therapist4.3%Physical Therapist - 3.7%Physical Therapist3.7%Pharmacist - 3.7%Pharmacist3.7%Mental Health Counselor - 3.1%Mental Health Counselor3.1%Internal Medicine Physician - 3.1%Internal Medicine Physician3.1%Hospitalist Physician - 0.2%Hospitalist Physician0.2%
Largest specialties in Hawaii (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hospitalist Physician. Verify directly:

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).

Joshua Starbuck, MD appears in the CMS NPPES registry as a Hospitalist Physician provider holding MD credentials at 2748 AKALANI LOOP, Makawao, HI, 96768, with a listed phone of (808) 633-5539. NPI 1114287828 was issued on 05/29/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Starbuck 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 362 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $47K 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

2748 AKALANI LOOP
Makawao, HI 96768

Provider Details

NPI 1114287828
Specialty Hospitalist Physician
Credentials MD
Gender Male
NPI Issued 05/29/2012

Medicare Part D Prescribing Data

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

362
Total Claims
$47K
Total Drug Cost
38
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
694
Total Day Supply
19,234
Generic Drug Cost
$11K
Antibiotic Claims
30

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
0.79
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

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

What Joshua Starbuck, 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
Rosuvastatin Calcium
25
Levothyroxine Sodium
24
Eszopiclone
18
Alprazolam
17
Trazodone Hcl
13
Insulin Lispro
11
Prednisone
11

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

Hospitalist Physician Overview

How Joshua Starbuck, MD fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

Joshua Starbuck, MD's 362 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Hawaii

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

Compare Hospitalist 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 Hawaii medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hospitalist 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 Joshua Starbuck, MD's specialty?
Joshua Starbuck, MD specializes in Hospitalist Physician and practices in Makawao, Hawaii. Credentials: MD.
How much does Joshua Starbuck, MD prescribe under Medicare Part D?
In 2023, Joshua Starbuck, MD wrote 362 Medicare Part D claims totaling $47K in drug costs for 38 beneficiaries.
Where is Joshua Starbuck, MD located?
Joshua Starbuck, MD is located at 2748 AKALANI LOOP, Makawao, HI, 96768. Phone: (808) 633-5539.
What is Joshua Starbuck, MD's NPI number?
Joshua Starbuck, MD's National Provider Identifier (NPI) is 1114287828, issued on 05/29/2012.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does Joshua Starbuck, MD prescribe most often?
Based on 2023 Medicare Part D data, Joshua Starbuck, MD's most frequently prescribed drugs include Rosuvastatin Calcium, Levothyroxine Sodium, Eszopiclone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joshua Starbuck, MD accept Medicare?
Joshua Starbuck, MD appears in CMS Medicare data with 362 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joshua Starbuck, MD's credentials?
Joshua Starbuck, MD's NPI is 1114287828 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

Compiled from official public sources by the PlainDoctor editorial team.