Dr. Grace Lynn Su, MD

  • Fontana, CA
  • Ophthalmologist
NPI1265994933PAC ID4183043052
Medicare services, 2024
36
Medicare patients, 2024
66
Part D claims, 2024
1,189
Publications
6
Hospital affiliations
1
Practice address
9961 Sierra Ave, Fontana, CA 92335
Practice phone
Call (909) 427-3910
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Fontana Medical Center

Fontana, California

See all 4 affiliations

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Dr. Grace Lynn Su is an ophthalmologist in Fontana, California

Dr. Su practices at Fontana Medical Center in Fontana, California.

Dr. Su's NPI, 1265994933, was assigned on April 2, 2019. Dr. Su graduated from Lewis Katz School of Medicine in 2019. Dr. Su holds California license A185652.

NPI and contact details
Medicare PAC ID
4183043052
NPI enumeration date
April 2, 2019
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(909) 427-3910
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
33
Medical school graduation
2019

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Grace Lynn Su practices at Fontana Medical Center in Fontana, California

Dr. Su's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-3910.

  • Fontana Medical Center
    9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-3910

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Grace Lynn Su is affiliated with 2 sites of care and 2 medical groups

Dr. Su's primary practice is Fontana Medical Center in Fontana, California. Dr. Su is also affiliated with Santa Clara Valley Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Su to 1 more medical group, named with a free account.

See all 4 affiliations for Dr. Su

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Grace Lynn Su's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Su practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Fontana Medical CenterAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Grace Lynn Su is one of 2,621 ophthalmologists in California

Ophthalmology is Dr. Su's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. Su's licenses on file in 2 states: California and Washington.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense A185652 · 2023 to 2027 · taxonomy 207W00000X
  • Washington license2020 to 2023

Clinical focus

Dmand AI lists dry eye and vision problems among the conditions Dr. Su treats.

Ophthalmologists near Dr. Su

Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Grace Lynn Su billed Medicare for 36 services in 2024

CMS data shows 36 Medicare services from Dr. Su across 2 procedure codes in 2024, for 66 Medicare patients. Medicare paid $3,877 for them. Every service was in an office.

Medicare services, 202436
Medicare patients66
Paid by Medicare$3,877
Procedure codes2

Dr. Su's Medicare services by type, 2024

  1. Surgery19
  2. Office and hospital visits17

Dr. Su compared with the California median for ophthalmologists, 2024

  • Dr. Su
  • California median
Medicare services
36vs 1,07997% below
Medicare patients
66vs 42184% below
Part D claims
1,051vs 61870% above

Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.

Dr. Su's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Su

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Grace Lynn Su treated 66 Medicare patients in 2024, average age 77

CMS counts 66 Medicare patients who saw Dr. Su in 2024. The largest group is 75 to 84, with 27 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 1.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Su's median patient age at 63, with 62% women.

Medicare patients, 202466
Average age77
Average risk score1.72
Also on Medicaid32%

Dr. Su's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Su's Medicare patients by sex, 2024

  • Women3350%
  • Men3350%

Chronic conditions among Dr. Su's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis45%
  4. Ischemic heart disease36%
  5. Diabetes35%
  6. Anxiety32%
  7. Chronic kidney disease32%
  8. Atrial fibrillation27%

Share of Medicare patients with each condition. A patient can have several.

Dr. Su's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 63

Patient panel by sex, all payers

  • Women62%
  • Men38%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Grace Lynn Su wrote 1,189 Medicare Part D claims in 2024

In 2024, Dr. Su wrote 1,189 Medicare Part D claims for 393 patients. 47% of them were for generic drugs. CMS names the drug for 1,051 of them, across 21 drugs with 11 or more claims each, at $204,659 in total drug cost. In 2023, CMS named 320 claims across 8 drugs.

Part D claims, 20241,189
Drugs named by CMS21
Total drug cost$204,659
Part D patients393

Dr. Su's Part D claims by kind of drug, 2024

  • Generic555 claims47%
  • Brand-name634 claims53%

Dr. Su's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Su's Part D claims, 2024

  • Antibiotics3%38 of 1,189 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 3202024: 1,051228%

Drugs named by CMS: 21 in 2024, 8 in 2023.

See all prescribing by Dr. Su

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Grace Lynn Su takes part in Medicare

Dr. Su accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Grace Lynn Su has 6 publications on record

Dmand AI links 6 papers to Dr. Su, published from 2017 to 2023. 2019 was the busiest year, with 2. The most frequent topics are Visual Acuity. Dr. Su's most frequent co-authors are Arman Mashayekhi, MD, Lauren A. Dalvin, MD and Colin Froines, MD.

Papers6
Years published2017 to 2023

Dr. Su's papers by year, 2017 to 2023

Topics Dr. Su writes about most

  • Visual Acuity

Dr. Su's most frequent co-authors

Recent publications by Dr. Su

See all 6 publications and co-authors

See who Dr. Su researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Su works with, so you can find a warm path to the right ophthalmologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Grace Lynn Su received $2,911 in industry payments from 2023 to 2024

CMS Open Payments shows 24 general payments to Dr. Su from 5 drug and device companies from 2023 to 2024. Travel and lodging make up the largest share, 40% of the total. Bausch & Lomb Americas Inc. paid the most, $2,333.

General payments to Dr. Su by program year, 2023 to 2024

General payments to Dr. Su by kind, 2023 to 2024

$2.9Kin total
  • Travel and lodging$1,17140%
  • Consulting fees$1,00034%
  • Food and beverage$73925%

Companies that paid Dr. Su the most, 2023 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Su

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Grace Lynn Su graduated from Lewis Katz School of Medicine

Dr. Su graduated from Lewis Katz School of Medicine in 2019.

  1. Medical schoolLewis Katz School of Medicine

Source: Dmand AI Professional Profile Data

Dr. Grace Lynn Su accepts plans from 2 insurance carriers

Dr. Su is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • Kaiser Permanente
  • CMS Medicare

Plan types Dr. Su accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. Medicare1
  4. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Grace Lynn Su's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Grace Lynn Su

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Grace Lynn Su's NPI number?

Dr. Grace Lynn Su's NPI number is 1265994933. It was assigned on April 2, 2019, and it is active in the NPI Registry.

What kind of doctor is Dr. Grace Lynn Su?

Dr. Grace Lynn Su is an ophthalmologist in Fontana, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Dr. Grace Lynn Su practice?

Dr. Su practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Su's primary practice is Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Su to 1 medical group.

What is Dr. Grace Lynn Su's office phone number?

The practice phone on file for Dr. Su is (909) 427-3910.

What is Dr. Grace Lynn Su's medical license number?

Dr. Su holds California license A185652, one of the licenses on file in 2 states.

Which states has Dr. Grace Lynn Su been licensed in?

Dmand AI has state licenses on file for Dr. Su in California (2023 to 2027) and Washington (2020 to 2023).

Which hospitals is Dr. Grace Lynn Su affiliated with?

Dr. Su is affiliated with Santa Clara Valley Medical Center.

What medical group is Dr. Grace Lynn Su part of?

Dr. Su is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Su to 1 more medical group.

Does Dr. Grace Lynn Su accept Medicare?

Yes. CMS data shows Dr. Su billed Medicare for 36 services in 2024, and Dr. Su accepts Medicare assignment.

How many Medicare patients does Dr. Grace Lynn Su see?

CMS counts 66 Medicare patients who saw Dr. Su in 2024, with an average age of 77.

Show 8 more questionsShow fewer questions

What services does Dr. Grace Lynn Su bill to Medicare?

In 2024, Dr. Su's most billed Medicare services were surgery: eye (65756) and office visit, established patient (99213).

Where did Dr. Grace Lynn Su go to medical school?

Dr. Su graduated from Lewis Katz School of Medicine in 2019.

What drugs does Dr. Grace Lynn Su prescribe most?

In 2024 Medicare Part D data, Dr. Su's most prescribed drugs by claims were Prednisolone Acetate, Moxifloxacin and Xiidra.

Has Dr. Grace Lynn Su received payments from drug or device companies?

CMS Open Payments shows $2,911 in general payments to Dr. Su from 5 companies from 2023 to 2024. The largest total came from Bausch & Lomb Americas Inc.

How long has Dr. Grace Lynn Su been practicing?

Dr. Su graduated from medical school in 2019, 7 years ago.

Does Dr. Grace Lynn Su do research?

Dmand AI links 6 publications to Dr. Su, published from 2017 to 2023.

Who does Dr. Grace Lynn Su publish with?

Dr. Su's most frequent co-authors are Arman Mashayekhi, MD (2 shared papers), Lauren A. Dalvin, MD (1 shared paper) and Colin Froines, MD (1 shared paper).

What insurance does Dr. Grace Lynn Su accept?

Dr. Su is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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