2026 NPPES data Orthopaedic Surgery Physician NPI 1831191410 MD
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DONALD NORQUIST, MD

Orthopaedic Surgery Physician in PASADENA, California. 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
37
Medicare Part D claims · Orthopaedic Surgery Physician avg: 324
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

DONALD NORQUIST, MD filed 37 Medicare Part D claims in 2023 as a Orthopaedic Surgery Physician in PASADENA, California, prescribing 65% generic.

37
Part D claims, 2023
65%
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.

DONALD NORQUIST, MD's Medicare Part D volume vs every U.S. prescriber

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

37 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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)

DONALD NORQUIST, 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 DONALD NORQUIST, MD?

Quality data not reported

NPI registry status

Active

Issued 08/12/2005

NPI 1831191410

Primary specialty

Orthopaedic Surgery Physician

Mid-sized

25,781 US NPIs in this specialty

Medicare Part D claims

37 89% vs specialty avg

2023 prescription claims

Specialty avg: 324

Specialty distribution in California

How Orthopaedic Surgery Physician compares to other specialties among California providers

California providers

Orthopaedic Surgery Physician share within California

1. Orthopaedic Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Orthopaedic Surgery Physician share within California

Specialty board-certification context

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

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

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

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

DONALD NORQUIST, MD appears in the CMS NPPES registry as a Orthopaedic Surgery Physician provider holding MD credentials at 2627 E WASHINGTON BLVD, PASADENA, CA, 91107, with a listed phone of (626) 797-2002. NPI 1831191410 was issued on 08/12/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NORQUIST 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 37 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $11K in drug spend, split 35% brand-name and 65% 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.

Orthopaedic Surgery Physician is a mid-sized specialty nationwide, with 25,781 enrolled providers across 56 states and an average of 324 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

2627 E WASHINGTON BLVD
PASADENA, CA 91107

Provider Details

NPI 1831191410
Specialty Orthopaedic Surgery Physician
Credentials MD
Gender Male
NPI Issued 08/12/2005

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to DONALD NORQUIST, MD. To verify DONALD NORQUIST, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

DONALD NORQUIST, MD — brand share 35.0%
Specialty average (est.)

35% brand-name claims vs 65% generic, on 37 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.

37
Total Claims
$11K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
55
Total Day Supply
1,650
Brand vs Generic
35% brand / 65% generic
Brand Drug Cost
$11K
Generic Drug Cost
$589

Patient Demographics

Average Patient Age
79.7 years
Avg HCC Risk Score
1.53

Orthopaedic Surgery Physician Overview

How DONALD NORQUIST, MD fits within the Orthopaedic Surgery Physician landscape nationally.

25,781
Orthopaedic Surgery Physician Providers in US
56
States with Orthopaedic Surgery Physician
324
Avg Claims per Provider

DONALD NORQUIST, MD's 37 claims are below the specialty average of 324.

Nearby Orthopaedic Surgery Physician Providers in California

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

Compare Orthopaedic Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DONALD NORQUIST, MD's specialty?
DONALD NORQUIST, MD specializes in Orthopaedic Surgery Physician and practices in PASADENA, California. Credentials: MD.
How much does DONALD NORQUIST, MD prescribe under Medicare Part D?
In 2023, DONALD NORQUIST, MD wrote 37 Medicare Part D claims totaling $11K in drug costs for N/A beneficiaries.
Where is DONALD NORQUIST, MD located?
DONALD NORQUIST, MD is located at 2627 E WASHINGTON BLVD, PASADENA, CA, 91107. Phone: (626) 797-2002.
What is DONALD NORQUIST, MD's NPI number?
DONALD NORQUIST, MD's National Provider Identifier (NPI) is 1831191410, issued on 08/12/2005.
Does DONALD NORQUIST, MD prescribe more brand-name or generic drugs?
DONALD NORQUIST, MD's prescribing is 35% brand-name and 65% generic drugs by claim count, with $11K in brand drug costs.
How many Orthopaedic Surgery Physician providers are there in the US?
There are 25,781 Orthopaedic Surgery Physician providers across 56 states in the US. The average Orthopaedic Surgery Physician provider writes 324 Medicare Part D claims per year.
Does DONALD NORQUIST, MD accept Medicare?
DONALD NORQUIST, MD appears in CMS Medicare data with 37 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 DONALD NORQUIST, MD's credentials?
DONALD NORQUIST, MD's NPI is 1831191410 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