2026 NPPES data Ophthalmology Physician NPI 1477723187 MD
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MARGARET WONG GRIBBLE, MD

Ophthalmology Physician in ATLANTA, Georgia. 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 · 273 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
66%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
89.2895/100
▲ 6 pts above national avg 83.1 · [object Object]
Industry payments
$93.8K
154 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARGARET WONG GRIBBLE, MD reported a CMS MIPS final score of 89.2895/100 — above the 83.1 national average — and filed 1,235 Medicare Part D claims in 2023.

89.2895/100
MIPS score · +6 vs avg
1K
Part D claims, 2023
66%
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.

MARGARET WONG GRIBBLE, MD's MIPS score vs every scored U.S. clinician

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

89 Top 42% higher than 58% 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%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 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)

MARGARET WONG GRIBBLE, 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 MARGARET WONG GRIBBLE, MD?

High performer (top quartile)

NPI registry status

Active

Issued 03/10/2008

NPI 1477723187

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,235 13% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

89.2895/100 6.1895000000000095% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Georgia

How Ophthalmology Physician compares to other specialties among Georgia providers

Georgia providers

Ophthalmology Physician share within Georgia

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

Medicare quality performance — MIPS

MARGARET WONG GRIBBLE, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

High performer (top quartile)
MIPS Final Score
89.2895/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 89.2895/100 vs national avg 83.1

0%100%National avg83%89.3%
MIPS final score (Ophthalmology Physician) — 89.2895/100 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).

MARGARET WONG GRIBBLE, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 3225 CUMBERLAND BLVD SE STE 800, ATLANTA, GA, 30339, with a listed phone of (404) 351-2220. NPI 1477723187 was issued on 03/10/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WONG GRIBBLE 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 1,235 prescription claims written by this provider, covering 273 Medicare beneficiaries and totaling roughly $929K in drug spend, split 34% brand-name and 66% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 89.2895/100 for the 2023 performance year (Quality 80.5263), 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

3225 CUMBERLAND BLVD SE STE 800
ATLANTA, GA 30339

Provider Details

NPI 1477723187
Specialty Ophthalmology Physician
Credentials MD
Gender Female
NPI Issued 03/10/2008

CMS Quality Score (MIPS)

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

89.2895
Final Score
Avg: 83.1
80.5263
Quality
100
Promoting Interoperability

Reporting: Individual

Hospital and facility affiliations

Facilities where MARGARET WONG GRIBBLE, 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.

EYE CONSULTANTS OF ATLANTA, PC
ATLANTA, GA

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 MARGARET WONG GRIBBLE, MD. Source: openpaymentsdata.cms.gov.

Total received

$93.8K

Largest payer

Mallinckrodt Hospital Products 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.

Brand vs generic prescribing mix · Above average

MARGARET WONG GRIBBLE, MD — brand share 34.0%
Specialty average (est.)

34% brand-name claims vs 66% generic, on 1,235 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.

1,235
Total Claims
$929K
Total Drug Cost
273
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,825
Total Day Supply
50,861
Brand vs Generic
34% brand / 66% generic
Brand Drug Cost
$884K
Generic Drug Cost
$46K

Patient Demographics

Average Patient Age
71.8 years
Avg HCC Risk Score
1.34
Gender Split
64% female / 36% male
Age Distribution
<65: 34, 65-74: 133, 75-84: 76, 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 MARGARET WONG GRIBBLE, 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
Ketorolac Tromethamine
232
Prednisolone Acetate
182
Difluprednate
173
Prednisone
150
Prolensa
Bromfenac Sodium
50
Methotrexate
Methotrexate Sodium
46
Combigan
Brimonidine Tartrate/Timolol
43
Lotemax Sm
Loteprednol Etabonate
30
Atropine Sulfate
29
Mycophenolate Mofetil
26

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

Ophthalmology Physician Overview

How MARGARET WONG GRIBBLE, 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

MARGARET WONG GRIBBLE, MD's 1,235 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Georgia

Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as WONG GRIBBLE.

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

Frequently Asked Questions

What is MARGARET WONG GRIBBLE, MD's specialty?
MARGARET WONG GRIBBLE, MD specializes in Ophthalmology Physician and practices in ATLANTA, Georgia. Credentials: MD.
How much does MARGARET WONG GRIBBLE, MD prescribe under Medicare Part D?
In 2023, MARGARET WONG GRIBBLE, MD wrote 1,235 Medicare Part D claims totaling $929K in drug costs for 273 beneficiaries.
What is MARGARET WONG GRIBBLE, MD's Medicare quality score?
MARGARET WONG GRIBBLE, MD has a CMS MIPS Final Score of 89.2895/100 (Quality: 80.5263). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARGARET WONG GRIBBLE, MD located?
MARGARET WONG GRIBBLE, MD is located at 3225 CUMBERLAND BLVD SE STE 800, ATLANTA, GA, 30339. Phone: (404) 351-2220.
What is MARGARET WONG GRIBBLE, MD's NPI number?
MARGARET WONG GRIBBLE, MD's National Provider Identifier (NPI) is 1477723187, issued on 03/10/2008.
Does MARGARET WONG GRIBBLE, MD prescribe more brand-name or generic drugs?
MARGARET WONG GRIBBLE, MD's prescribing is 34% brand-name and 66% generic drugs by claim count, with $884K 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 MARGARET WONG GRIBBLE, MD prescribe most often?
Based on 2023 Medicare Part D data, MARGARET WONG GRIBBLE, MD's most frequently prescribed drugs include Ketorolac Tromethamine, Prednisolone Acetate, Difluprednate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARGARET WONG GRIBBLE, MD accept Medicare?
MARGARET WONG GRIBBLE, MD appears in CMS Medicare data with 1,235 Part D claims and 273 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARGARET WONG GRIBBLE, MD's credentials?
MARGARET WONG GRIBBLE, MD's NPI is 1477723187 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