Dr. Chi Mong Christopher Or, MD
- Medicare services, 2024
- 2,045
- Medicare patients, 2024
- 817
- Part D claims, 2024
- 904
- Hospital affiliations
- 1
- Industry payments
- $10,354
- Practice address
- 1300 Crane St, Menlo Park, CA 94025
- Practice phone
- Call (650) 498-6530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Menlo Medical Clinic - Menlo Park (Crane St)
Mammography / Breast Imaging Center · Menlo Park, California
Find Dr. Or's professional email, personal email and mobile number
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Dr. Chi Mong Christopher Or is an uveitis and ocular inflammatory disease (ophthalmology) physician in Menlo Park, California
Dr. Or practices at Menlo Medical Clinic - Menlo Park (Crane St) in Menlo Park, California.
Dr. Or's NPI, 1639676000, was assigned on April 11, 2018. Dr. Or graduated from University of British Columbia in 2015. Dr. Or holds California license A172845.
- NPI
- 1639676000NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5890046452
- NPI enumeration date
- April 11, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 498-6530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chi Mong Christopher Or practices at Menlo Medical Clinic - Menlo Park (Crane St) in Menlo Park, California
Dr. Or's primary practice is Menlo Medical Clinic - Menlo Park (Crane St), at 1300 Crane St, Menlo Park, CA 94025. The practice phone is (650) 498-6530.
- Menlo Medical Clinic - Menlo Park (Crane St)1300 Crane St, Menlo Park, CA 94025Phone(650) 498-6530
Source: Dmand AI Affiliation Data
Dr. Chi Mong Christopher Or is affiliated with 2 sites of care and 4 medical groups
Dr. Or's primary practice is Menlo Medical Clinic - Menlo Park (Crane St) in Menlo Park, California. Dr. Or is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is Lucile Packard Children's Hospital Stanford. Dmand AI also links Dr. Or to 3 more medical groups, each named with a free account. Dr. Or's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chi Mong Christopher Or's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Or practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Menlo Medical Clinic - Menlo Park (Crane St) | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chi Mong Christopher Or is one of 9 uveitis and ocular inflammatory disease (ophthalmology) physicians in California
Uveitis and ocular inflammatory disease is Dr. Or's primary specialty in the NPI Registry, under taxonomy code 207WX0108X. Dr. Or is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Or is licensed in California.
Specialties and state licenses
- Uveitis and ocular inflammatory disease (ophthalmology), CaliforniaPrimary
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eye infection or inflammation, eyelid inflammation and glaucoma among the conditions Dr. Or treats.
Uveitis and ocular inflammatory disease (ophthalmology) physicians near Dr. Or
Counts of uveitis and ocular inflammatory disease (ophthalmology) physicians 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. Chi Mong Christopher Or billed Medicare for 2,045 services in 2024
CMS data shows 2,045 Medicare services from Dr. Or across 19 procedure codes in 2024, for 817 Medicare patients. Medicare paid $198,489 for them.
Dr. Or's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5942024: 95861%
- Office and hospital visits
- 2023: 5442024: 93071%
- Surgery
- 2023: 292024: 139379%
- Other services
- 2023: 02024: 18
Where Dr. Or's Medicare services took place, 2024
- In an office1,95596%
- In a facility904%
Dr. Or'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Or and other uveitis and ocular inflammatory disease (ophthalmology) physicians in California.
Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Chi Mong Christopher Or treated 817 Medicare patients in 2024, average age 77
CMS counts 817 Medicare patients who saw Dr. Or in 2024. The largest group is 75 to 84, with 352 patients. 75% of them have high cholesterol, and 61% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Or's median patient age at 71, with 61% women.
Dr. Or's Medicare patients by age, 2024
Dr. Or's Medicare patients by sex, 2024
- Women49561%
- Men32239%
Chronic conditions among Dr. Or's Medicare patients, 2024
- High cholesterol75%
- High blood pressure61%
- Arthritis34%
- Osteoporosis27%
- Ischemic heart disease24%
- Diabetes21%
- Atrial fibrillation16%
- Cancer16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Or's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chi Mong Christopher Or wrote 904 Medicare Part D claims in 2024
In 2024, Dr. Or wrote 904 Medicare Part D claims for 264 patients. 52% of them were for generic drugs. CMS names the drug for 804 of them, across 18 drugs with 11 or more claims each, at $76,146 in total drug cost. In 2023, CMS named 393 claims across 11 drugs.
Dr. Or's Part D claims by kind of drug, 2024
- Generic468 claims52%
- Brand-name436 claims48%
Dr. Or'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: 3932024: 804105%
Drugs named by CMS: 18 in 2024, 11 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. Chi Mong Christopher Or ranks in the 77th percentile for cataract surgery in Medicare
Dr. Or accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 123 procedures of cataract surgery by Dr. Or, more than 77% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Or ranks in Medicare procedure volume
- Cataract surgery
- 77th percentile123 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. Chi Mong Christopher Or received $10,354 in industry payments from 2021 to 2025
CMS Open Payments shows 143 general payments to Dr. Or from 17 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 66% of the total. Mallinckrodt Hospital Products Inc. paid the most, $3,178.
General payments to Dr. Or by program year, 2021 to 2025
General payments to Dr. Or by kind, 2021 to 2025
- Food and beverage$6,82966%
- Speaker and faculty fees$1,55015%
- Honoraria$1,27512%
- Consulting fees$7007%
Companies that paid Dr. Or the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chi Mong Christopher Or graduated from University of British Columbia
Dr. Or graduated from University of British Columbia in 2015.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Chi Mong Christopher Or accepts plans from 8 insurance carriers
Dr. Or is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- NV State Medicaid
Plan types Dr. Or accepts, by number of carriers
- Medicare4
- PPO4
- HMO3
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chi Mong Christopher Or'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) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Chi Mong Christopher Or
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What is Dr. Chi Mong Christopher Or's NPI number?
Dr. Chi Mong Christopher Or's NPI number is 1639676000. It was assigned on April 11, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Chi Mong Christopher Or?
Dr. Chi Mong Christopher Or is an uveitis and ocular inflammatory disease (ophthalmology) physician in Menlo Park, California. The primary specialty in the NPI Registry is Uveitis and Ocular Inflammatory Disease (Ophthalmology) Physician (taxonomy code 207WX0108X).
Where does Dr. Chi Mong Christopher Or practice?
Dr. Or practices at 1300 Crane St, Menlo Park, CA 94025. Dr. Or's primary practice is Menlo Medical Clinic - Menlo Park (Crane St) in Menlo Park, California. Dmand AI also links Dr. Or to 3 medical groups.
What is Dr. Chi Mong Christopher Or's office phone number?
The practice phone on file for Dr. Or is (650) 498-6530.
What is Dr. Chi Mong Christopher Or's medical license number?
Dr. Or holds California license A172845.
Which hospitals is Dr. Chi Mong Christopher Or affiliated with?
Dr. Or is affiliated with Stanford Hospital at 300 Pasteur Drive.
What medical group is Dr. Chi Mong Christopher Or part of?
Dr. Or is linked to Lucile Packard Children's Hospital Stanford. Dmand AI links Dr. Or to 3 more medical groups.
Does Dr. Chi Mong Christopher Or accept Medicare?
Yes. CMS data shows Dr. Or billed Medicare for 2,045 services in 2024, and Dr. Or accepts Medicare assignment.
How many Medicare patients does Dr. Chi Mong Christopher Or see?
CMS counts 817 Medicare patients who saw Dr. Or in 2024, with an average age of 77.
Is Dr. Chi Mong Christopher Or board certified?
Yes. Dr. Or is board certified in ophthalmology by the American Board of Ophthalmology.
Show 6 more questionsShow fewer questions
What services does Dr. Chi Mong Christopher Or bill to Medicare?
In 2024, Dr. Or's most billed Medicare services were office visit, established patient (99214), eye exam or test (92134) and office visit, established patient (99213).
Where did Dr. Chi Mong Christopher Or go to medical school?
Dr. Or graduated from University of British Columbia in 2015.
What drugs does Dr. Chi Mong Christopher Or prescribe most?
In 2024 Medicare Part D data, Dr. Or's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Prednisolone Acetate.
Has Dr. Chi Mong Christopher Or received payments from drug or device companies?
CMS Open Payments shows $10,354 in general payments to Dr. Or from 17 companies from 2021 to 2025. The largest total came from Mallinckrodt Hospital Products Inc.
How long has Dr. Chi Mong Christopher Or been practicing?
Dr. Or graduated from medical school in 2015, 11 years ago.
What insurance does Dr. Chi Mong Christopher Or accept?
Dr. Or is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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