2026 NPPES data Ophthalmology Physician NPI 1477579100 M.D.
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JO JOHNSON, M.D.

Ophthalmology Physician in SACO, Maine. 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
515
Medicare Part D claims · 125 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
71%
generic claims · 29% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JO JOHNSON, M.D. is a Ophthalmology Physician ([object Object]) practicing in SACO, Maine with a Medicare Part D prescribing footprint of 515 claims across 125 beneficiaries — 29% brand-name prescribing .

What stands out: JO JOHNSON, M.D. filed 515 Medicare Part D claims in 2023 across SACO, Maine. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JO JOHNSON, 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).

JO JOHNSON, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/14/2006

NPI 1477579100

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

515 64% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Maine

How Ophthalmology Physician compares to other specialties among Maine providers

Maine providers

Ophthalmology Physician share within Maine

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

Specialty board-certification context

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

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

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

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

JO JOHNSON, M.D. is a Ophthalmology Physician provider practicing in SACO, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1477579100. 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.

JO JOHNSON, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 333 LINCOLN ST STE 200, SACO, ME, 04072, with a listed phone of (207) 283-3676. NPI 1477579100 was issued on 07/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOHNSON 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 515 prescription claims written by this provider, covering 125 Medicare beneficiaries and totaling roughly $90K in drug spend, split 29% brand-name and 71% 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.

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

333 LINCOLN ST STE 200
SACO, ME 04072

Provider Details

NPI 1477579100
Specialty Ophthalmology Physician
Credentials M.D.
Gender Female
NPI Issued 07/14/2006

Brand vs generic prescribing mix · Above average

JO JOHNSON, M.D. — brand share 29.0%
Specialty average (est.)

29% brand-name claims vs 71% generic, on 515 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.

515
Total Claims
$90K
Total Drug Cost
125
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,101
Total Day Supply
31,187
Brand vs Generic
29% brand / 71% generic
Brand Drug Cost
$77K
Generic Drug Cost
$13K
Antibiotic Claims
37

Patient Demographics

Average Patient Age
79.2 years
Avg HCC Risk Score
1.25
Gender Split
62% female / 38% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
147
Dorzolamide Hcl
44
Timolol Maleate
41
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
34
Combigan
Brimonidine Tartrate/Timolol
31
Doxycycline Hyclate
23
Lumigan
Bimatoprost
19
Brimonidine Tartrate
18
Moxifloxacin
Moxifloxacin Hcl
15
Ketorolac Tromethamine
13

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

Ophthalmology Physician Overview

How JO JOHNSON, M.D. 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

JO JOHNSON, M.D.'s 515 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Maine

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

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

Frequently Asked Questions

What is JO JOHNSON, M.D.'s specialty?
JO JOHNSON, M.D. specializes in Ophthalmology Physician and practices in SACO, Maine. Credentials: M.D..
How much does JO JOHNSON, M.D. prescribe under Medicare Part D?
In 2023, JO JOHNSON, M.D. wrote 515 Medicare Part D claims totaling $90K in drug costs for 125 beneficiaries.
Where is JO JOHNSON, M.D. located?
JO JOHNSON, M.D. is located at 333 LINCOLN ST STE 200, SACO, ME, 04072. Phone: (207) 283-3676.
What is JO JOHNSON, M.D.'s NPI number?
JO JOHNSON, M.D.'s National Provider Identifier (NPI) is 1477579100, issued on 07/14/2006.
Does JO JOHNSON, M.D. prescribe more brand-name or generic drugs?
JO JOHNSON, M.D.'s prescribing is 29% brand-name and 71% generic drugs by claim count, with $77K in brand drug costs.
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 JO JOHNSON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JO JOHNSON, M.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide Hcl, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JO JOHNSON, M.D. accept Medicare?
JO JOHNSON, M.D. appears in CMS Medicare data with 515 Part D claims and 125 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JO JOHNSON, M.D.'s credentials?
JO JOHNSON, M.D.'s NPI is 1477579100 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