Aggregatibacter actinomycetemcomitansAggressive PeriodontitisAntibodies, Anticardiolipin
Dr. John Grant Tew, MD
NPI1174593354PAC ID4183605108
- Medicare services, 2024
- 3,051
- Medicare patients, 2024
- 1,169
- Part D claims, 2024
- 2,573
- Publications
- 73
- MIPS score, 2024
- 91
- Practice address
- 25395 Hancock Avenue, Suite 100, Murrieta, CA 92562
- Practice phone
- Call (951) 696-5388
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Inland Eye Specialists Surgery Center - Murrieta
Surgery Center - Medicare-Certified · Murrieta, California
Find Dr. Tew'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. John Grant Tew is an ophthalmologist in Murrieta, California
Dr. Tew practices at Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California.
Dr. Tew's NPI, 1174593354, was assigned on January 23, 2006. Dr. Tew graduated from VCU School of Medicine in 1999. Dr. Tew holds California license A83206.
NPI and contact details
- NPI
- 1174593354NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183605108
- NPI enumeration date
- January 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 696-5388
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Grant Tew practices at Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California
Dr. Tew's primary practice is Inland Eye Specialists Surgery Center - Murrieta, at 25395 Hancock Avenue, Suite 100, Murrieta, CA 92562. The practice phone is (951) 696-5388.
- Inland Eye Specialists Surgery Center - Murrieta25395 Hancock Avenue, Suite 100, Murrieta, CA 92562Phone(951) 696-5388
Source: Dmand AI Affiliation Data
Dr. John Grant Tew is affiliated with 2 sites of care and 1 medical group
Dr. Tew's primary practice is Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California. Dmand AI also links Dr. Tew to 1 ambulatory surgery center and 1 medical group, each named with a free account. Dr. Tew's employer is on file too: a surgery center (asc).
Inland Eye Specialists Surgery Center - MurrietaPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Grant Tew's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tew practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inland Eye Specialists Surgery Center - Murrieta | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Tew practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Grant Tew is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Tew's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Tew is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Tew's licenses on file in 2 states: California and Colorado.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Colorado license
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. Tew treats.
Ophthalmologists near Dr. Tew
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
2,621ophthalmologists in California
7ophthalmologists in Murrieta
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Grant Tew billed Medicare for 3,051 services in 2024
CMS data shows 3,051 Medicare services from Dr. Tew across 12 procedure codes in 2024, for 1,169 Medicare patients. Medicare paid $280,670 for them.
Medicare services, 20243,051
Medicare patients1,169
Paid by Medicare$280,670
Procedure codes12
Dr. Tew's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,5602024: 1,5034%
- Tests and treatments
- 2023: 1,3092024: 1,2475%
- Surgery
- 2023: 3242024: 3017%
Where Dr. Tew's Medicare services took place, 2024
- In an office2,75090%
- In a facility30110%
Dr. Tew compared with the California median for ophthalmologists, 2024
- Dr. Tew
- California median
- Medicare services
- 3,051vs 1,0792.8 times
- Medicare patients
- 1,169vs 4212.8 times
- Part D claims
- 2,465vs 6184.0 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Tew'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. Tew?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tew and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Grant Tew treated 1,169 Medicare patients in 2024, average age 76
CMS counts 1,169 Medicare patients who saw Dr. Tew in 2024. The largest group is 75 to 84, with 488 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tew's median patient age at 69, with 58% women.
Medicare patients, 20241,169
Average age76
Average risk score1.12
Also on Medicaid17%
Dr. Tew's Medicare patients by age, 2024
Dr. Tew's Medicare patients by sex, 2024
- Women73062%
- Men43938%
Chronic conditions among Dr. Tew's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis42%
- Diabetes33%
- Ischemic heart disease25%
- Chronic kidney disease21%
- Osteoporosis19%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tew's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
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. John Grant Tew wrote 2,573 Medicare Part D claims in 2024
In 2024, Dr. Tew wrote 2,573 Medicare Part D claims for 828 patients. 55% of them were for generic drugs. CMS names the drug for 2,465 of them, across 24 drugs with 11 or more claims each, at $491,296 in total drug cost. In 2023, CMS named 2,350 claims across 24 drugs.
Part D claims, 20242,573
Drugs named by CMS24
Total drug cost$491,296
Part D patients828
Dr. Tew's Part D claims by kind of drug, 2024
- Generic1,420 claims55%
- Brand-name1,153 claims45%
Dr. Tew'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: 2,3502024: 2,4655%
Drugs named by CMS: 24 in 2024, 24 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. John Grant Tew scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Tew for performance year 2024, reported as part of a group. Dr. Tew accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 260 procedures of cataract surgery by Dr. Tew, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Tew's MIPS scores, performance year 2024
- 91of 100Final score
- 88.7of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Tew ranks in Medicare procedure volume
- Cataract surgery
- 87th percentile260 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Find ophthalmologists like Dr. Tew by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John Grant Tew has 73 publications on record
Dmand AI links 73 papers to Dr. Tew, published from 2005 to 2011. 2005 was the busiest year, with 3. The most frequent topics are Dendritic Cells, Immunoglobulin G and B-Lymphocytes. Dr. Tew has published most often in Infect Immun.
Papers73
Years published2005 to 2011
Dr. Tew's papers by year, 2005 to 2011
Topics Dr. Tew writes about most
- Dendritic Cells
- Immunoglobulin G
- B-Lymphocytes
- Mice, Inbred BALB C
- Cells, Cultured
- Periodontitis
- Dendritic Cells, Follicular
- Antibodies, Bacterial
Recent publications by Dr. Tew
Antigen-Antibody ComplexAntigen PresentationB-Lymphocytes
Aggressive PeriodontitisAnalysis of VarianceBlack People
ADAM10 ProteinADAM ProteinsAmyloid Precursor Protein Secretases
Antigen-Antibody ComplexAntigensB-Lymphocytes
See who Dr. Tew researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tew 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. John Grant Tew received $4,258 in industry payments from 2016 to 2025
CMS Open Payments shows 223 general payments to Dr. Tew from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $1,142.
General payments to Dr. Tew by program year, 2016 to 2025
Companies that paid Dr. Tew the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Grant Tew has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Tew, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Tew
- 2013
- CMS Stage 1 EHR
- Undated
- AAO Fellow
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. John Grant Tew graduated from VCU School of Medicine
Dr. Tew graduated from VCU School of Medicine in 1999. Dr. Tew is a member of AAO and ACS.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. John Grant Tew accepts plans from 19 insurance carriers
Dr. Tew is in network with 19 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Humana
- +11 more carriersWith a free account
Plan types Dr. Tew accepts, by number of carriers
- HMO13
- PPO11
- Medicare9
- POS7
- EPO5
Source: Dmand AI Insurance Network Data
Sources for Dr. John Grant Tew'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)Clinician Public Reporting: Overall MIPS Performance (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. John Grant Tew
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. John Grant Tew's NPI number?
Dr. John Grant Tew's NPI number is 1174593354. It was assigned on January 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Grant Tew?
Dr. John Grant Tew is an ophthalmologist in Murrieta, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. John Grant Tew practice?
Dr. Tew practices at 25395 Hancock Avenue, Suite 100, Murrieta, CA 92562. Dr. Tew's primary practice is Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California. Dmand AI also links Dr. Tew to 1 ambulatory surgery center and 1 medical group.
What is Dr. John Grant Tew's office phone number?
The practice phone on file for Dr. Tew is (951) 696-5388.
What is Dr. John Grant Tew's medical license number?
Dr. Tew holds California license A83206, one of the licenses on file in 2 states.
Which states has Dr. John Grant Tew been licensed in?
Dmand AI has state licenses on file for Dr. Tew in California (2003 to 2027) and Colorado (2002 to 2003).
Does Dr. John Grant Tew accept Medicare?
Yes. CMS data shows Dr. Tew billed Medicare for 3,051 services in 2024, and Dr. Tew accepts Medicare assignment.
What is Dr. John Grant Tew's MIPS score?
Dr. Tew's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. John Grant Tew see?
CMS counts 1,169 Medicare patients who saw Dr. Tew in 2024, with an average age of 76.
Is Dr. John Grant Tew board certified?
Yes. Dr. Tew is board certified in ophthalmology by the American Board of Ophthalmology.
Show 7 more questionsShow fewer questions
What services does Dr. John Grant Tew bill to Medicare?
In 2024, Dr. Tew's most billed Medicare services were office visit, established patient (99214), eye exam or test (92136) and office visit, established patient (99213).
Where did Dr. John Grant Tew go to medical school?
Dr. Tew graduated from VCU School of Medicine in 1999.
What drugs does Dr. John Grant Tew prescribe most?
In 2024 Medicare Part D data, Dr. Tew's most prescribed drugs by claims were Latanoprost, Moxifloxacin and Prednisolone Acetate.
Has Dr. John Grant Tew received payments from drug or device companies?
CMS Open Payments shows $4,258 in general payments to Dr. Tew from 24 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. John Grant Tew been practicing?
Dr. Tew graduated from medical school in 1999, 27 years ago.
Does Dr. John Grant Tew do research?
Dmand AI links 73 publications to Dr. Tew, published from 2005 to 2011.
What insurance does Dr. John Grant Tew accept?
Dr. Tew is in network with 19 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.
Selling to ophthalmology practices?
See ophthalmologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card