Ophthalmology
Corneal DiseasesHydrophthalmos
Dr. Isabella T. Phan, MD
NPI1598977415PAC ID0547302002
- Medicare patients, 2024
- 16
- Part D claims, 2024
- 1,096
- Publications
- 8
- Industry payments
- $32
- Affiliated sites
- 2
- Practice address
- 2238 Geary Blvd, San Francisco, CA 94115
- Practice phone
- Call (415) 833-3700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Francisco Medical Center - Mammography
Mammography / Breast Imaging Center · San Francisco, California
Find Dr. Phan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Isabella T. Phan is an ophthalmologist in San Francisco, California
Dr. Phan practices at San Francisco Medical Center - Mammography in San Francisco, California.
Dr. Phan's NPI, 1598977415, was assigned on May 4, 2007. Dr. Phan graduated from UCSF School of Medicine in 2005. Dr. Phan holds California license 99033.
NPI and contact details
- NPI
- 1598977415NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547302002
- NPI enumeration date
- May 4, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 833-3700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Isabella T. Phan practices at San Francisco Medical Center - Mammography in San Francisco, California
Dr. Phan's primary practice is San Francisco Medical Center - Mammography, at 2238 Geary Blvd, San Francisco, CA 94115. The practice phone is (415) 833-3700.
- San Francisco Medical Center - Mammography2238 Geary Blvd, San Francisco, CA 94115Phone(415) 833-3700
Source: Dmand AI Affiliation Data
Dr. Isabella T. Phan is affiliated with 2 sites of care and 1 medical group
Dr. Phan's primary practice is San Francisco Medical Center - Mammography in San Francisco, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Phan to 1 more group practice or clinic, named with a free account. Dr. Phan's employer is on file too: a breast imaging center.
San Francisco Medical Center - MammographyPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Isabella T. Phan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Francisco Medical Center - Mammography | 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. Isabella T. Phan is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Phan's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Phan is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Phan's licenses on file in 2 states: California and Oregon.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Oregon license
Ophthalmologists near Dr. Phan
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. Isabella T. Phan treated 16 Medicare patients in 2024, average age 67
CMS counts 16 Medicare patients who saw Dr. Phan in 2024. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Phan's median patient age at 65, with 49% women.
Medicare patients, 202416
Average age67
Average risk score0.79
Dr. Phan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Isabella T. Phan wrote 1,096 Medicare Part D claims in 2024
In 2024, Dr. Phan wrote 1,096 Medicare Part D claims for 244 patients. 69% of them were for generic drugs. CMS names the drug for 955 of them, across 13 drugs with 11 or more claims each, at $40,333 in total drug cost. In 2023, CMS named 819 claims across 13 drugs.
Part D claims, 20241,096
Drugs named by CMS13
Total drug cost$40,333
Part D patients244
Dr. Phan's Part D claims by kind of drug, 2024
- Generic753 claims69%
- Brand-name343 claims31%
Dr. Phan'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: 8192024: 95517%
Drugs named by CMS: 13 in 2024, 13 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
How Dr. Isabella T. Phan takes part in Medicare
Dr. Phan 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. Isabella T. Phan has 8 publications on record
Dmand AI links 8 papers to Dr. Phan, published from 2010 to 2022. 2010 was the busiest year, with 2. The most frequent topics are Orbit. Dr. Phan has published most often in Ophthalmology. Dr. Phan's most frequent co-authors are Michele Marjorie Bloomer, MD, Joseph Brooks Crawford, MD and Ralph C. Eagle, MD.
Papers8
Years published2010 to 2022
Topics Dr. Phan writes about most
- Orbit
Dr. Phan's most frequent co-authors
- Michele Marjorie Bloomer, MD1 shared paper
- Joseph Brooks Crawford, MD1 shared paper
- Ralph C. Eagle, MD1 shared paper
Recent publications by Dr. Phan
Ciliary BodyDNA Mutational AnalysisGTP-Binding Protein alpha Subunits
Eye DiseasesLightRetinal Neoplasms
BlindnessOptic AtrophyOrbit
See who Dr. Phan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Phan 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. Isabella T. Phan received $32 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Phan from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Carl Zeiss Meditec, Inc. paid the most, $32.
Companies that paid Dr. Phan the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Isabella T. Phan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Phan.
Awards and honors for Dr. Phan
- Undated
- AAO Fellow
Source: Dmand AI Professional Profile Data
Dr. Isabella T. Phan graduated from UCSF School of Medicine
Dr. Phan graduated from UCSF School of Medicine in 2005. Dr. Phan is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Isabella T. Phan accepts plans from 4 insurance carriers
Dr. Phan is in network with 4 carriers, including Aetna, Elevance and Kaiser Permanente. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Phan accepts, by number of carriers
- HMO3
- Medicare3
- EPO2
- POS2
- PPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Isabella T. Phan'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 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) |
| 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. Isabella T. Phan
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. Isabella T. Phan's NPI number?
Dr. Isabella T. Phan's NPI number is 1598977415. It was assigned on May 4, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Isabella T. Phan?
Dr. Isabella T. Phan is an ophthalmologist in San Francisco, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Isabella T. Phan practice?
Dr. Phan practices at 2238 Geary Blvd, San Francisco, CA 94115. Dr. Phan's primary practice is San Francisco Medical Center - Mammography in San Francisco, California. Dmand AI also links Dr. Phan to 1 group practice or clinic.
What is Dr. Isabella T. Phan's office phone number?
The practice phone on file for Dr. Phan is (415) 833-3700.
What is Dr. Isabella T. Phan's medical license number?
Dr. Phan holds California license 99033, one of the licenses on file in 2 states.
Which states has Dr. Isabella T. Phan been licensed in?
Dmand AI has state licenses on file for Dr. Phan in California (2007 to 2026) and Oregon (since 2009).
What medical group is Dr. Isabella T. Phan part of?
Dr. Phan is linked to The Permanente Medical Group, Inc.
Does Dr. Isabella T. Phan accept Medicare?
Yes. CMS lists Dr. Phan as accepting Medicare assignment.
How many Medicare patients does Dr. Isabella T. Phan see?
CMS counts 16 Medicare patients who saw Dr. Phan in 2024, with an average age of 67.
Is Dr. Isabella T. Phan board certified?
Yes. Dr. Phan is board certified in ophthalmology by the American Board of Ophthalmology.
Show 7 more questionsShow fewer questions
Where did Dr. Isabella T. Phan go to medical school?
Dr. Phan graduated from UCSF School of Medicine in 2005.
What drugs does Dr. Isabella T. Phan prescribe most?
In 2024 Medicare Part D data, Dr. Phan's most prescribed drugs by claims were Prednisolone Acetate, Latanoprost and Moxifloxacin.
Has Dr. Isabella T. Phan received payments from drug or device companies?
CMS Open Payments shows $32 in general payments to Dr. Phan from 1 company from 2018 to 2018. The largest total came from Carl Zeiss Meditec, Inc.
How long has Dr. Isabella T. Phan been practicing?
Dr. Phan graduated from medical school in 2005, 21 years ago.
Does Dr. Isabella T. Phan do research?
Dmand AI links 8 publications to Dr. Phan, published from 2010 to 2022.
Who does Dr. Isabella T. Phan publish with?
Dr. Phan's most frequent co-authors are Michele Marjorie Bloomer, MD (1 shared paper), Joseph Brooks Crawford, MD (1 shared paper) and Ralph C. Eagle, MD (1 shared paper).
What insurance does Dr. Isabella T. Phan accept?
Dr. Phan is in network with 4 carriers, including Aetna, Elevance and Kaiser Permanente. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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