2026 NPPES data Ophthalmology Physician NPI 1932640109 MD
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COLIN BACORN, MD

Ophthalmology Physician in CHULA VISTA, 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
429
Medicare Part D claims · 257 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.3962/100
▼ 9 pts below national avg 83.1 · [object Object]

What the federal data shows

COLIN BACORN, MD reported a CMS MIPS final score of 74.3962/100 — below the 83.1 national average — and filed 429 Medicare Part D claims in 2023.

74.3962/100
MIPS score · -9 vs avg
429
Part D claims, 2023
86%
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.

COLIN BACORN, MD's MIPS score vs every scored U.S. clinician

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

74 12th percentile higher than 12% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 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)

COLIN BACORN, MD 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 COLIN BACORN, MD?

Below national average

NPI registry status

Active

Issued 03/20/2017

NPI 1932640109

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

429 70% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

74.3962/100 8.703800000000001% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in California

How Ophthalmology Physician compares to other specialties among California providers

California providers

Ophthalmology Physician share within California

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

Medicare quality performance — MIPS

COLIN BACORN, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

Below national average
MIPS Final Score
74.3962/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 74.3962/100 vs national avg 83.1

0%100%National avg83%74.4%
MIPS final score (Ophthalmology Physician) — 74.3962/100 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).

COLIN BACORN, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 835 THIRD AVE, CHULA VISTA, CA, 91911, with a listed phone of (619) 425-7755. NPI 1932640109 was issued on 03/20/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BACORN 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 429 prescription claims written by this provider, covering 257 Medicare beneficiaries and totaling roughly $12K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 24.5%. 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 74.3962/100 for the 2023 performance year (Quality 64.7185, Cost 52.4354), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

835 THIRD AVE
CHULA VISTA, CA 91911

Provider Details

NPI 1932640109
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 03/20/2017

CMS Quality Score (MIPS)

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

74.3962
Final Score
Avg: 83.1
64.7185
Quality
52.4354
Cost
97
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where COLIN BACORN, MD 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.

CALIFORNIA RETINA ASSOCIATES, LP
ESCONDIDO, 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).

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 COLIN BACORN, MD. To verify COLIN BACORN, 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 · Typical

COLIN BACORN, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 429 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.

429
Total Claims
$12K
Total Drug Cost
257
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
441
Total Day Supply
4,800
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$9K
Generic Drug Cost
$3K
Opioid Claims
105 (24.5% rate)
Antibiotic Claims
41

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
1.12
Gender Split
59% female / 41% male
Age Distribution
<65: 11, 65-74: 112, 75-84: 104, 85+: 30

Top Prescribed Drugs (Medicare Part D)

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

What COLIN BACORN, 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
Erythromycin
Erythromycin Base
150
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
85
Tramadol Hcl
81
Cephalexin
23
Acetaminophen-Codeine
Acetaminophen With Codeine
14

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

Ophthalmology Physician Overview

How COLIN BACORN, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

COLIN BACORN, MD's 429 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in California

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

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

Frequently Asked Questions

What is COLIN BACORN, MD's specialty?
COLIN BACORN, MD specializes in Ophthalmology Physician and practices in CHULA VISTA, California. Credentials: MD.
How much does COLIN BACORN, MD prescribe under Medicare Part D?
In 2023, COLIN BACORN, MD wrote 429 Medicare Part D claims totaling $12K in drug costs for 257 beneficiaries.
What is COLIN BACORN, MD's Medicare quality score?
COLIN BACORN, MD has a CMS MIPS Final Score of 74.3962/100 (Quality: 64.7185, Cost: 52.4354). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is COLIN BACORN, MD located?
COLIN BACORN, MD is located at 835 THIRD AVE, CHULA VISTA, CA, 91911. Phone: (619) 425-7755.
What is COLIN BACORN, MD's NPI number?
COLIN BACORN, MD's National Provider Identifier (NPI) is 1932640109, issued on 03/20/2017.
Does COLIN BACORN, MD prescribe more brand-name or generic drugs?
COLIN BACORN, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $9K in brand drug costs.
Does COLIN BACORN, MD prescribe opioids?
Yes, COLIN BACORN, MD had 105 opioid claims in 2023 with an opioid prescribing rate of 24.5%.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does COLIN BACORN, MD prescribe most often?
Based on 2023 Medicare Part D data, COLIN BACORN, MD's most frequently prescribed drugs include Erythromycin, Neomycin-Polymyxin-Dexameth, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does COLIN BACORN, MD accept Medicare?
COLIN BACORN, MD appears in CMS Medicare data with 429 Part D claims and 257 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify COLIN BACORN, MD's credentials?
COLIN BACORN, MD's NPI is 1932640109 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.
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