2026 NPPES data Cornea and External Diseases Specialist Physician NPI 1861788564 MD
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MONA SANE, MD

Cornea and External Diseases Specialist Physician in LOS ALTOS, 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
270
Medicare Part D claims · 85 beneficiaries · Cornea and External Diseases Specialist Physician avg: 1K
Generic prescribing
56%
generic claims · 44% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$62.44
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MONA SANE, MD filed 270 Medicare Part D claims in 2023 as a Cornea and External Diseases Specialist Physician in LOS ALTOS, California, prescribing 56% generic.

270
Part D claims, 2023
56%
generic prescribing
$62.44
industry payments (Sunshine Act)

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.

MONA SANE, MD's Medicare Part D volume vs every U.S. prescriber

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

270 49th percentile higher than 49% 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. 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)

MONA SANE, 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 MONA SANE, MD?

Quality data not reported

NPI registry status

Active

Issued 06/22/2011

NPI 1861788564

Primary specialty

Cornea and External Diseases Specialist Physician

Rare

294 US NPIs in this specialty

Medicare Part D claims

270 78% vs specialty avg

2023 prescription claims

Specialty avg: 1,232

Specialty distribution in California

How Cornea and External Diseases Specialist Physician compares to other specialties among California providers

California providers

Cornea and External Diseases Specialist Physician share within California

1. Cornea and External Diseases Specialist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cornea and External Diseases Specialist Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Cornea and External Diseases Specialist Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Cornea and External Diseases Specialist Physician ABMS/AOA estimate

Est. board-certified rate (Cornea and External Diseases Specialist Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Cornea and External Diseases Specialist 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).

MONA SANE, MD is a Cornea and External Diseases Specialist Physician provider practicing in LOS ALTOS, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1861788564. 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.

MONA SANE, MD appears in the CMS NPPES registry as a Cornea and External Diseases Specialist Physician provider holding MD credentials at 289 S SAN ANTONIO RD STE 110, LOS ALTOS, CA, 94022, with a listed phone of (650) 254-6648. NPI 1861788564 was issued on 06/22/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SANE 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 270 prescription claims written by this provider, covering 85 Medicare beneficiaries and totaling roughly $25K in drug spend, split 44% brand-name and 56% 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.

Cornea and External Diseases Specialist Physician is a narrow specialty nationwide, with 294 enrolled providers across 43 states and an average of 1,232 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

289 S SAN ANTONIO RD STE 110
LOS ALTOS, CA 94022

Provider Details

NPI 1861788564
Specialty Cornea and External Diseases Specialist Physician
Credentials MD
Gender Female
NPI Issued 06/22/2011

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 MONA SANE, MD. Source: openpaymentsdata.cms.gov.

Total received

$62

Largest payer

Alcon Vision LLC

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 MONA SANE, MD. To verify MONA SANE, 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

MONA SANE, MD — brand share 44.0%
Specialty average (est.)

44% brand-name claims vs 56% generic, on 270 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.

270
Total Claims
$25K
Total Drug Cost
85
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
321
Total Day Supply
8,015
Brand vs Generic
44% brand / 56% generic
Brand Drug Cost
$17K
Generic Drug Cost
$8K

Patient Demographics

Average Patient Age
75.5 years
Avg HCC Risk Score
1.26
Gender Split
67% female / 33% 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
Prednisolone Acetate
65
Ketorolac Tromethamine
42
Ofloxacin
38
Ilevro
Nepafenac
32
Difluprednate
23
Brimonidine Tartrate
15
Ciprofloxacin Hcl
14
Latanoprost
11

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

Cornea and External Diseases Specialist Physician Overview

How MONA SANE, MD fits within the Cornea and External Diseases Specialist Physician landscape nationally.

294
Cornea and External Diseases Specialist Physician Providers in US
43
States with Cornea and External Diseases Specialist Physician
1,232
Avg Claims per Provider

MONA SANE, MD's 270 claims are below the specialty average of 1,232.

Nearby Cornea and External Diseases Specialist Physician Providers in California

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

Compare Cornea and External Diseases Specialist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MONA SANE, MD's specialty?
MONA SANE, MD specializes in Cornea and External Diseases Specialist Physician and practices in LOS ALTOS, California. Credentials: MD.
How much does MONA SANE, MD prescribe under Medicare Part D?
In 2023, MONA SANE, MD wrote 270 Medicare Part D claims totaling $25K in drug costs for 85 beneficiaries.
Where is MONA SANE, MD located?
MONA SANE, MD is located at 289 S SAN ANTONIO RD STE 110, LOS ALTOS, CA, 94022. Phone: (650) 254-6648.
What is MONA SANE, MD's NPI number?
MONA SANE, MD's National Provider Identifier (NPI) is 1861788564, issued on 06/22/2011.
Does MONA SANE, MD prescribe more brand-name or generic drugs?
MONA SANE, MD's prescribing is 44% brand-name and 56% generic drugs by claim count, with $17K in brand drug costs.
How many Cornea and External Diseases Specialist Physician providers are there in the US?
There are 294 Cornea and External Diseases Specialist Physician providers across 43 states in the US. The average Cornea and External Diseases Specialist Physician provider writes 1,232 Medicare Part D claims per year.
What drugs does MONA SANE, MD prescribe most often?
Based on 2023 Medicare Part D data, MONA SANE, MD's most frequently prescribed drugs include Prednisolone Acetate, Ketorolac Tromethamine, Ofloxacin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MONA SANE, MD accept Medicare?
MONA SANE, MD appears in CMS Medicare data with 270 Part D claims and 85 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MONA SANE, MD's credentials?
MONA SANE, MD's NPI is 1861788564 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