Dr. Mary Ann E. Lloyd, MD
- Medicare services, 2024
- 3,361
- Medicare patients, 2024
- 833
- Part D claims, 2024
- 2,228
- Publications
- 11
- Industry payments
- $499
- Practice address
- 795 El Camino Real, Palo Alto, CA 94301
- Practice phone
- Call (650) 324-1832
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center Palo Alto
Surgery Center - Medicare-Certified · Palo Alto, California
Find Dr. Lloyd's professional email, personal email and mobile number
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Dr. Mary Ann E. Lloyd is an ophthalmologist in Palo Alto, California
Dr. Lloyd practices at Surgery Center Palo Alto in Palo Alto, California.
Dr. Lloyd's NPI, 1285743153, was assigned on August 30, 2006. Dr. Lloyd graduated from Vagelos College of Physicians and Surgeons in 1985. Dr. Lloyd holds California license G65455.
- NPI
- 1285743153NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537232640
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 324-1832
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Ann E. Lloyd practices at Surgery Center Palo Alto in Palo Alto, California
Dr. Lloyd's primary practice is Surgery Center Palo Alto, at 795 El Camino Real, Palo Alto, CA 94301. The practice phone is (650) 324-1832.
- Surgery Center Palo Alto795 El Camino Real, Palo Alto, CA 94301Phone(650) 324-1832
Source: Dmand AI Affiliation Data
Dr. Mary Ann E. Lloyd is affiliated with 2 sites of care and 1 medical group
Dr. Lloyd's primary practice is Surgery Center Palo Alto in Palo Alto, California. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Lloyd to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary Ann E. Lloyd's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lloyd practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center Palo Alto | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Ann E. Lloyd is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Lloyd's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Lloyd is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Lloyd's licenses on file in 2 states: California and Wisconsin.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Wisconsin license
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eyelid inflammation, glaucoma and glaucoma surgery among the conditions Dr. Lloyd treats.
Ophthalmologists near Dr. Lloyd
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. Mary Ann E. Lloyd billed Medicare for 3,361 services in 2024
CMS data shows 3,361 Medicare services from Dr. Lloyd across 16 procedure codes in 2024, for 833 Medicare patients. Medicare paid $305,185 for them.
Dr. Lloyd's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2132024: 1,36713%
- Tests and treatments
- 2023: 1,2102024: 1,2665%
- Other services
- 2023: 02024: 483
- Surgery
- 2023: 2462024: 2287%
- Imaging
- 2023: 222024: 1723%
Where Dr. Lloyd's Medicare services took place, 2024
- In an office3,18995%
- In a facility1725%
Dr. Lloyd compared with the California median for ophthalmologists, 2024
- Dr. Lloyd
- California median
- Medicare services
- 3,361vs 1,0793.1 times
- Medicare patients
- 833vs 42198% above
- Part D claims
- 2,147vs 6183.5 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Lloyd'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.
Need commercial claims for Dr. Lloyd?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lloyd and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Ann E. Lloyd treated 833 Medicare patients in 2024, average age 80
CMS counts 833 Medicare patients who saw Dr. Lloyd in 2024. The largest group is 75 to 84, with 368 patients. 72% of them have high cholesterol, and 63% have high blood pressure. 6% are also on Medicaid. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lloyd's median patient age at 78, with 58% women.
Dr. Lloyd's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lloyd's Medicare patients by sex, 2024
- Women53264%
- Men30136%
Chronic conditions among Dr. Lloyd's Medicare patients, 2024
- High cholesterol72%
- High blood pressure63%
- Arthritis35%
- Osteoporosis29%
- Ischemic heart disease20%
- Diabetes18%
- Atrial fibrillation17%
- Cancer17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lloyd's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Ann E. Lloyd wrote 2,228 Medicare Part D claims in 2024
In 2024, Dr. Lloyd wrote 2,228 Medicare Part D claims for 454 patients. 56% of them were for generic drugs. CMS names the drug for 2,147 of them, across 19 drugs with 11 or more claims each, at $167,664 in total drug cost. In 2023, CMS named 2,463 claims across 21 drugs.
Dr. Lloyd's Part D claims by kind of drug, 2024
- Generic1,242 claims56%
- Brand-name986 claims44%
Dr. Lloyd'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,4632024: 2,14713%
Drugs named by CMS: 19 in 2024, 21 in 2023.
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
Dr. Mary Ann E. Lloyd ranks in the 86th percentile for cataract surgery in Medicare
Dr. Lloyd accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 241 procedures of cataract surgery by Dr. Lloyd, more than 86% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Lloyd ranks in Medicare procedure volume
- Cataract surgery
- 86th percentile241 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mary Ann E. Lloyd has 11 publications on record
Dmand AI links 11 papers to Dr. Lloyd. The most frequent topics are Glaucoma, Intraocular Pressure and Prostheses and Implants. Dr. Lloyd has published most often in Ophthalmology. Dr. Lloyd's most frequent co-authors are John S. Lean, MD, Quang Huu Nguyen, MD and Evelyn A. Paysse, MD.
Topics Dr. Lloyd writes about most
- Glaucoma
- Intraocular Pressure
- Prostheses and Implants
- Silicone Elastomers
- Visual Acuity
- Aqueous Humor
- Postoperative Complications
- Ultrasonography
Dr. Lloyd's most frequent co-authors
- John S. Lean, MD2 shared papers
- Quang Huu Nguyen, MD2 shared papers
- Evelyn A. Paysse, MD1 shared paper
Recent publications by Dr. Lloyd
Ophthalmology
See who Dr. Lloyd researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lloyd works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mary Ann E. Lloyd received $499 in industry payments from 2016 to 2019
CMS Open Payments shows 9 general payments to Dr. Lloyd from 4 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 98% of the total. Alcon Laboratories Inc paid the most, $298.
General payments to Dr. Lloyd by program year, 2016 to 2019
General payments to Dr. Lloyd by kind, 2016 to 2019
- Food and beverage$48798%
- Travel and lodging$122%
Companies that paid Dr. Lloyd the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary Ann E. Lloyd has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Lloyd, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Lloyd
- 2013
- CMS Stage 1 EHR
- Undated
- AAO Fellow
Source: Dmand AI Professional Profile Data
Dr. Mary Ann E. Lloyd graduated from Vagelos College of Physicians and Surgeons
Dr. Lloyd graduated from Vagelos College of Physicians and Surgeons in 1985. Dr. Lloyd is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Mary Ann E. Lloyd accepts plans from 15 insurance carriers
Dr. Lloyd is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Lloyd accepts, by number of carriers
- PPO10
- Medicare7
- HMO6
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary Ann E. Lloyd's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary Ann E. Lloyd
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. Mary Ann E. Lloyd's NPI number?
Dr. Mary Ann E. Lloyd's NPI number is 1285743153. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Ann E. Lloyd?
Dr. Mary Ann E. Lloyd is an ophthalmologist in Palo Alto, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Mary Ann E. Lloyd practice?
Dr. Lloyd practices at 795 El Camino Real, Palo Alto, CA 94301. Dr. Lloyd's primary practice is Surgery Center Palo Alto in Palo Alto, California. Dmand AI also links Dr. Lloyd to 1 group practice or clinic.
What is Dr. Mary Ann E. Lloyd's office phone number?
The practice phone on file for Dr. Lloyd is (650) 324-1832.
What is Dr. Mary Ann E. Lloyd's medical license number?
Dr. Lloyd holds California license G65455, one of the licenses on file in 2 states.
Which states has Dr. Mary Ann E. Lloyd been licensed in?
Dmand AI has state licenses on file for Dr. Lloyd in California (1989 to 2026) and Wisconsin (1986 to 1989).
What medical group is Dr. Mary Ann E. Lloyd part of?
Dr. Lloyd is linked to Palo Alto Foundation Medical Group.
Does Dr. Mary Ann E. Lloyd accept Medicare?
Yes. CMS data shows Dr. Lloyd billed Medicare for 3,361 services in 2024, and Dr. Lloyd accepts Medicare assignment.
How many Medicare patients does Dr. Mary Ann E. Lloyd see?
CMS counts 833 Medicare patients who saw Dr. Lloyd in 2024, with an average age of 80.
Is Dr. Mary Ann E. Lloyd board certified?
Yes. Dr. Lloyd is board certified in ophthalmology by the American Board of Ophthalmology.
Show 8 more questionsShow fewer questions
What services does Dr. Mary Ann E. Lloyd bill to Medicare?
In 2024, Dr. Lloyd's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and eye exam or test (92133).
Where did Dr. Mary Ann E. Lloyd go to medical school?
Dr. Lloyd graduated from Vagelos College of Physicians and Surgeons in 1985.
What drugs does Dr. Mary Ann E. Lloyd prescribe most?
In 2024 Medicare Part D data, Dr. Lloyd's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Prednisolone Acetate.
Has Dr. Mary Ann E. Lloyd received payments from drug or device companies?
CMS Open Payments shows $499 in general payments to Dr. Lloyd from 4 companies from 2016 to 2019. The largest total came from Alcon Laboratories Inc.
How long has Dr. Mary Ann E. Lloyd been practicing?
Dr. Lloyd graduated from medical school in 1985, 41 years ago.
Does Dr. Mary Ann E. Lloyd do research?
Dmand AI links 11 publications to Dr. Lloyd.
Who does Dr. Mary Ann E. Lloyd publish with?
Dr. Lloyd's most frequent co-authors are John S. Lean, MD (2 shared papers), Quang Huu Nguyen, MD (2 shared papers) and Evelyn A. Paysse, MD (1 shared paper).
What insurance does Dr. Mary Ann E. Lloyd accept?
Dr. Lloyd is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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