2026 NPPES data Adult Reconstructive Orthopaedic Surgery Physician NPI 1952304594 M.D.
Verify on CMS →

ROBERT MONTGOMERY, M.D.

Adult Reconstructive Orthopaedic Surgery Physician in LAGUNA WOODS, 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
1K
Medicare Part D claims · 537 beneficiaries · Adult Reconstructive Orthopaedic Surgery Physician avg: 493
MIPS score
8.0149/100
▼ 75 pts below national avg 83.1 · [object Object]
Industry payments
$16.94
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ROBERT MONTGOMERY, M.D. reported a CMS MIPS final score of 8.0149/100 — below the 83.1 national average — and filed 1,315 Medicare Part D claims in 2023.

8.0149/100
MIPS score · -75 vs avg
1K
Part D claims, 2023
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.

ROBERT MONTGOMERY, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

8 2nd percentile higher than 2% of 477,587 scored providers

0–10: 8,684 scored providers (2%). This entry sits in this band. 10–20: 3,008 scored providers (1%). Above this entry. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

ROBERT MONTGOMERY, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 ROBERT MONTGOMERY, M.D.?

Below national average

NPI registry status

Active

Issued 05/27/2005

NPI 1952304594

Primary specialty

Adult Reconstructive Orthopaedic Surgery Physician

Niche

1,245 US NPIs in this specialty

Medicare Part D claims

1,315 167% vs specialty avg

2023 prescription claims

Specialty avg: 493

MIPS final score

8.0149/100 75.0851% pts

Penalty band band

vs 83.1 national avg

Specialty distribution in California

How Adult Reconstructive Orthopaedic Surgery Physician compares to other specialties among California providers

California providers

Adult Reconstructive Orthopaedic Surgery Physician share within California

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

Medicare quality performance — MIPS

ROBERT MONTGOMERY, M.D.'s 2023 MIPS final score plotted against the Adult Reconstructive Orthopaedic Surgery Physician national average

Below national average
MIPS Final Score
8.0149/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Adult Reconstructive Orthopaedic Surgery Physician) — 8.0149/100 vs national avg 83.1

0%100%National avg83%8%
MIPS final score (Adult Reconstructive Orthopaedic Surgery Physician) — 8.0149/100 vs national avg 83.1

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).

ROBERT MONTGOMERY, M.D. appears in the CMS NPPES registry as a Adult Reconstructive Orthopaedic Surgery Physician provider holding M.D. credentials at 24331 EL TORO RD STE 200, LAGUNA WOODS, CA, 92637, with a listed phone of (949) 586-3200. NPI 1952304594 was issued on 05/27/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MONTGOMERY 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 1,315 prescription claims written by this provider, covering 537 Medicare beneficiaries and totaling roughly $29K in drug spend, with an opioid prescribing rate of 10.8%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 8.0149/100 for the 2023 performance year (Quality 0, Cost 26.7165), compared with the national average of 83.1.

Adult Reconstructive Orthopaedic Surgery Physician is a narrow specialty nationwide, with 1,245 enrolled providers across 51 states and an average of 493 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

24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637

Provider Details

NPI 1952304594
Specialty Adult Reconstructive Orthopaedic Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 05/27/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

8.0149
Final Score
Avg: 83.1
0
Quality
26.7165
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where ROBERT MONTGOMERY, 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.

ORTHOWEST
LAGUNA WOODS, CA

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for ROBERT MONTGOMERY, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$17

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 ROBERT MONTGOMERY, M.D.. To verify ROBERT MONTGOMERY, M.D.'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.

Medicare Part D Prescribing Data

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

1,315
Total Claims
$29K
Total Drug Cost
537
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,417
Total Day Supply
34,949
Generic Drug Cost
$9K
Opioid Claims
142 (10.8% rate)
Antibiotic Claims
70

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
1.44
Gender Split
65% female / 35% male

Top Prescribed Drugs (Medicare Part D)

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

What ROBERT MONTGOMERY, 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
Meloxicam
830
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
85
Amoxicillin
40
Tramadol Hcl
37
Celecoxib
23
Naloxone Hcl
23
Xarelto
Rivaroxaban
20
Gabapentin
18
Pantoprazole Sodium
16
Potassium Chloride
16

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

Adult Reconstructive Orthopaedic Surgery Physician Overview

How ROBERT MONTGOMERY, M.D. fits within the Adult Reconstructive Orthopaedic Surgery Physician landscape nationally.

1,245
Adult Reconstructive Orthopaedic Surgery Physician Providers in US
51
States with Adult Reconstructive Orthopaedic Surgery Physician
493
Avg Claims per Provider

ROBERT MONTGOMERY, M.D.'s 1,315 claims are above the specialty average of 493.

Nearby Adult Reconstructive Orthopaedic Surgery Physician Providers in California

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

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

Frequently Asked Questions

What is ROBERT MONTGOMERY, M.D.'s specialty?
ROBERT MONTGOMERY, M.D. specializes in Adult Reconstructive Orthopaedic Surgery Physician and practices in LAGUNA WOODS, California. Credentials: M.D..
How much does ROBERT MONTGOMERY, M.D. prescribe under Medicare Part D?
In 2023, ROBERT MONTGOMERY, M.D. wrote 1,315 Medicare Part D claims totaling $29K in drug costs for 537 beneficiaries.
What is ROBERT MONTGOMERY, M.D.'s Medicare quality score?
ROBERT MONTGOMERY, M.D. has a CMS MIPS Final Score of 8.0149/100 (Quality: 0, Cost: 26.7165). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ROBERT MONTGOMERY, M.D. located?
ROBERT MONTGOMERY, M.D. is located at 24331 EL TORO RD STE 200, LAGUNA WOODS, CA, 92637. Phone: (949) 586-3200.
What is ROBERT MONTGOMERY, M.D.'s NPI number?
ROBERT MONTGOMERY, M.D.'s National Provider Identifier (NPI) is 1952304594, issued on 05/27/2005.
Does ROBERT MONTGOMERY, M.D. prescribe opioids?
Yes, ROBERT MONTGOMERY, M.D. had 142 opioid claims in 2023 with an opioid prescribing rate of 10.8%.
How many Adult Reconstructive Orthopaedic Surgery Physician providers are there in the US?
There are 1,245 Adult Reconstructive Orthopaedic Surgery Physician providers across 51 states in the US. The average Adult Reconstructive Orthopaedic Surgery Physician provider writes 493 Medicare Part D claims per year.
What drugs does ROBERT MONTGOMERY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROBERT MONTGOMERY, M.D.'s most frequently prescribed drugs include Meloxicam, Hydrocodone-Acetaminophen, Amoxicillin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT MONTGOMERY, M.D. accept Medicare?
ROBERT MONTGOMERY, M.D. appears in CMS Medicare data with 1,315 Part D claims and 537 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT MONTGOMERY, M.D.'s credentials?
ROBERT MONTGOMERY, M.D.'s NPI is 1952304594 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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