2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1992330021 MD
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PARAM BHATTER, MD

Retina Specialist (Ophthalmology) Physician in SAN FRANCISCO, 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
950
Medicare Part D claims · 311 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: PARAM BHATTER, MD is a Retina Specialist (Ophthalmology) Physician ([object Object]) practicing in SAN FRANCISCO, California with a Medicare Part D prescribing footprint of 950 claims across 311 beneficiaries — 28% brand-name prescribing .

What stands out: PARAM BHATTER, MD filed 950 Medicare Part D claims in 2023 across SAN FRANCISCO, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PARAM BHATTER, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

PARAM BHATTER, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/09/2020

NPI 1992330021

Primary specialty

Retina Specialist (Ophthalmology) Physician

Niche

913 US NPIs in this specialty

Medicare Part D claims

950 70% vs specialty avg

2023 prescription claims

Specialty avg: 558

Specialty distribution in California

How Retina Specialist (Ophthalmology) Physician compares to other specialties among California providers

California providers

Retina Specialist (Ophthalmology) Physician share within California

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

Specialty board-certification context

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

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

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

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

PARAM BHATTER, MD is a Retina Specialist (Ophthalmology) Physician provider practicing in SAN FRANCISCO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1992330021. 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.

PARAM BHATTER, MD appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding MD credentials at 1445 BUSH ST, SAN FRANCISCO, CA, 94109, with a listed phone of (415) 972-4600. NPI 1992330021 was issued on 03/09/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BHATTER 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 950 prescription claims written by this provider, covering 311 Medicare beneficiaries and totaling roughly $49K in drug spend, split 28% brand-name and 72% 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.

Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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

1445 BUSH ST
SAN FRANCISCO, CA 94109

Provider Details

NPI 1992330021
Specialty Retina Specialist (Ophthalmology) Physician
Credentials MD
Gender Male
NPI Issued 03/09/2020

Hospital and facility affiliations

Facilities where PARAM BHATTER, 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.

ALAMEDA HEALTH SYSTEM
OAKLAND, 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 PARAM BHATTER, MD. To verify PARAM BHATTER, 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

PARAM BHATTER, MD — brand share 28.0%
Specialty average (est.)

28% brand-name claims vs 72% generic, on 950 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.

950
Total Claims
$49K
Total Drug Cost
311
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,644
Total Day Supply
46,824
Brand vs Generic
28% brand / 72% generic
Brand Drug Cost
$25K
Generic Drug Cost
$24K

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
1.59
Gender Split
62% female / 38% male
Age Distribution
<65: 33, 65-74: 132, 75-84: 107, 85+: 39

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
406
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
132
Brimonidine Tartrate
130
Timolol Maleate
69
Prednisolone Acetate
40
Erythromycin
Erythromycin Base
31
Dorzolamide Hcl
30
Ketorolac Tromethamine
23
Azopt
Brinzolamide
12
Cyclosporine
11

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

Retina Specialist (Ophthalmology) Physician Overview

How PARAM BHATTER, MD fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.

913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider

PARAM BHATTER, MD's 950 claims are above the specialty average of 558.

Nearby Retina Specialist (Ophthalmology) Physician Providers in California

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

Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PARAM BHATTER, MD's specialty?
PARAM BHATTER, MD specializes in Retina Specialist (Ophthalmology) Physician and practices in SAN FRANCISCO, California. Credentials: MD.
How much does PARAM BHATTER, MD prescribe under Medicare Part D?
In 2023, PARAM BHATTER, MD wrote 950 Medicare Part D claims totaling $49K in drug costs for 311 beneficiaries.
Where is PARAM BHATTER, MD located?
PARAM BHATTER, MD is located at 1445 BUSH ST, SAN FRANCISCO, CA, 94109. Phone: (415) 972-4600.
What is PARAM BHATTER, MD's NPI number?
PARAM BHATTER, MD's National Provider Identifier (NPI) is 1992330021, issued on 03/09/2020.
Does PARAM BHATTER, MD prescribe more brand-name or generic drugs?
PARAM BHATTER, MD's prescribing is 28% brand-name and 72% generic drugs by claim count, with $25K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US?
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does PARAM BHATTER, MD prescribe most often?
Based on 2023 Medicare Part D data, PARAM BHATTER, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PARAM BHATTER, MD accept Medicare?
PARAM BHATTER, MD appears in CMS Medicare data with 950 Part D claims and 311 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PARAM BHATTER, MD's credentials?
PARAM BHATTER, MD's NPI is 1992330021 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