Dr. William H. Bartlett, MD

  • Rohnert Park, CA
  • Ophthalmologist
NPI1881680171PAC ID6204824758
Medicare services, 2024
6,365
Medicare patients, 2024
2,441
Part D claims, 2024
3,236
Clinical trials
1
MIPS score, 2024
92
Practice address
50 Professional Center Dr, Rohnert Park, CA 94928
Practice phone
Call (707) 588-7939
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

North Bay Eye Associates, Inc

Rohnert Park, California

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Dr. William H. Bartlett is an ophthalmologist in Rohnert Park, California

Dr. Bartlett practices at North Bay Eye Associates, Inc in Rohnert Park, California.

Dr. Bartlett's NPI, 1881680171, was assigned on September 22, 2005. Dr. Bartlett graduated from Ohio State College of Medicine in 1989. Dr. Bartlett holds California license G085502.

NPI and contact details
Medicare PAC ID
6204824758
NPI enumeration date
September 22, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(707) 588-7939
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
63
Medical school graduation
1989

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

Dr. William H. Bartlett practices at North Bay Eye Associates, Inc in Rohnert Park, California

Dr. Bartlett's primary practice is North Bay Eye Associates, Inc, at 50 Professional Center Dr, Rohnert Park, CA 94928 in Sonoma County. The practice phone is (707) 588-7939.

  • North Bay Eye Associates, Inc
    50 Professional Center Dr, Rohnert Park, CA 94928 · Sonoma CountyPhone(707) 588-7939

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

Dr. William H. Bartlett is affiliated with 4 sites of care and 1 medical group

Dr. Bartlett's primary practice is North Bay Eye Associates, Inc in Rohnert Park, California. Dr. Bartlett is also affiliated with Providence Santa Rosa Memorial Hospital. Dmand AI also links Dr. Bartlett to 1 more hospital, 1 ambulatory surgery center and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Bartlett

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. William H. Bartlett's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bartlett practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
North Bay Eye Associates, IncAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. William H. Bartlett is one of 2,621 ophthalmologists in California

Ophthalmology is Dr. Bartlett's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Bartlett is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Bartlett is licensed in California.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense G085502 · taxonomy 207W00000X

Clinical focus

Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, cold sores or genital herpes, conjunctivitis, dry eye, eyelid inflammation and glaucoma among the conditions Dr. Bartlett treats.

Ophthalmologists near Dr. Bartlett

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

2,621ophthalmologists in California
4ophthalmologists in Rohnert Park

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

Dr. William H. Bartlett billed Medicare for 6,365 services in 2024

CMS data shows 6,365 Medicare services from Dr. Bartlett across 18 procedure codes in 2024, for 2,441 Medicare patients. Medicare paid $608,418 for them.

Medicare services, 20246,365
Medicare patients2,441
Paid by Medicare$608,418
Procedure codes18

Dr. Bartlett's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 5,0592024: 5,4628%
Surgery
2023: 5192024: 5112%
Office and hospital visits
2023: 4712024: 35425%
Imaging
2023: 422024: 3810%

Where Dr. Bartlett's Medicare services took place, 2024

  • In an office5,88392%
  • In a facility4828%

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

  • Dr. Bartlett
  • California median
Medicare services
6,365vs 1,0795.9 times
Medicare patients
2,441vs 4215.8 times
Part D claims
3,124vs 6185.1 times

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

Dr. Bartlett'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. Bartlett

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

Dr. William H. Bartlett treated 2,441 Medicare patients in 2024, average age 78

CMS counts 2,441 Medicare patients who saw Dr. Bartlett in 2024. The largest group is 75 to 84, with 1,220 patients. 75% of them have high cholesterol, and 63% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.02, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Bartlett's median patient age at 77, with 60% women.

Medicare patients, 20242,441
Average age78
Average risk score1.02
Also on Medicaid5%

Dr. Bartlett's Medicare patients by age, 2024

Dr. Bartlett's Medicare patients by sex, 2024

  • Women1,50562%
  • Men93638%

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

  1. High cholesterol75%
  2. High blood pressure63%
  3. Arthritis42%
  4. Ischemic heart disease23%
  5. Osteoporosis20%
  6. Diabetes19%
  7. Atrial fibrillation18%
  8. Chronic kidney disease18%

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

Dr. Bartlett's patients across all payers

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

Patient panel by age, all payers

Median age 77

Patient panel by sex, all payers

  • Women60%
  • Men38%

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

Dr. William H. Bartlett wrote 3,236 Medicare Part D claims in 2024

In 2024, Dr. Bartlett wrote 3,236 Medicare Part D claims for 1,028 patients. 53% of them were for generic drugs. CMS names the drug for 3,124 of them, across 22 drugs with 11 or more claims each, at $216,784 in total drug cost. In 2023, CMS named 2,904 claims across 20 drugs.

Part D claims, 20243,236
Drugs named by CMS22
Total drug cost$216,784
Part D patients1,028

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

  • Generic1,713 claims53%
  • Brand-name1,523 claims47%

Dr. Bartlett'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. Bartlett's Part D claims, 2024

  • Antibiotics1%27 of 3,236 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: 2,9042024: 3,1248%

Drugs named by CMS: 22 in 2024, 20 in 2023.

See all prescribing by Dr. Bartlett

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. William H. Bartlett scored 92 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Bartlett for performance year 2024, reported as part of a group. Dr. Bartlett accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 470 procedures of cataract surgery by Dr. Bartlett, more than 95% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Dr. Bartlett's MIPS scores, performance year 2024

  • 92of 100Final score
  • 81.9of 100Quality
  • 99of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Bartlett ranks in Medicare procedure volume

Cataract surgery
95th percentile470 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)

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Dr. William H. Bartlett has worked on 1 clinical trial

Dmand AI links Dr. Bartlett to 1 clinical trial. Conditions studied include Glaucoma, Open-Angle and Glaucoma.

Conditions in Dr. Bartlett's trials

  • Glaucoma, Open-Angle
  • Glaucoma

Investigators on the most trials with Dr. Bartlett

Recent clinical trials with Dr. Bartlett

Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage

Dr. William H. Bartlett received $1,716 in industry payments from 2016 to 2025

CMS Open Payments shows 73 general payments to Dr. Bartlett from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 89% of the total. Allergan Inc. paid the most, $369.

General payments to Dr. Bartlett by program year, 2016 to 2025

General payments to Dr. Bartlett by kind, 2016 to 2025

$1.7Kin total
  • Food and beverage$1,52789%
  • Education$1137%
  • Gifts$754%

Companies that paid Dr. Bartlett the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Bartlett

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

Dr. William H. Bartlett has 1 award and honors on record

Dmand AI lists 1 award for Dr. Bartlett.

Awards and honors for Dr. Bartlett

  1. Undated
    • AAO Fellow

Source: Dmand AI Professional Profile Data

Dr. William H. Bartlett graduated from Ohio State College of Medicine

Dr. Bartlett graduated from Ohio State College of Medicine in 1989. Dr. Bartlett is a member of AAO.

  1. Medical schoolOhio State College of Medicine
  2. Board certified in ophthalmologyAmerican Board of Ophthalmology
  3. Board certified in 1999 - 2025CA State License
  4. Board certified in 1991 - 2001OH State License
  5. Board certified in 1991 - 1993PA State License

Source: Dmand AI Professional Profile Data

Dr. William H. Bartlett accepts plans from 14 insurance carriers

Dr. Bartlett is in network with 14 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Humana
  • Regence Health Plans
  • +6 more carriersWith a free account

Plan types Dr. Bartlett accepts, by number of carriers

  1. PPO10
  2. Medicare9
  3. HMO5
  4. POS5
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. William H. Bartlett'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Clinical trials and co-investigatorsClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
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. William H. Bartlett

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. William H. Bartlett's NPI number?

Dr. William H. Bartlett's NPI number is 1881680171. It was assigned on September 22, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. William H. Bartlett?

Dr. William H. Bartlett is an ophthalmologist in Rohnert Park, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Dr. William H. Bartlett practice?

Dr. Bartlett practices at 50 Professional Center Dr, Rohnert Park, CA 94928. Dr. Bartlett's primary practice is North Bay Eye Associates, Inc in Rohnert Park, California. Dmand AI also links Dr. Bartlett to 1 hospital, 1 ambulatory surgery center and 1 medical group.

What is Dr. William H. Bartlett's office phone number?

The practice phone on file for Dr. Bartlett is (707) 588-7939.

What is Dr. William H. Bartlett's medical license number?

Dr. Bartlett holds California license G085502.

Which hospitals is Dr. William H. Bartlett affiliated with?

Dr. Bartlett is affiliated with Providence Santa Rosa Memorial Hospital. Dmand AI links Dr. Bartlett to 1 more hospital.

Does Dr. William H. Bartlett accept Medicare?

Yes. CMS data shows Dr. Bartlett billed Medicare for 6,365 services in 2024, and Dr. Bartlett accepts Medicare assignment.

What is Dr. William H. Bartlett's MIPS score?

Dr. Bartlett's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.

How many Medicare patients does Dr. William H. Bartlett see?

CMS counts 2,441 Medicare patients who saw Dr. Bartlett in 2024, with an average age of 78.

Is Dr. William H. Bartlett board certified?

Yes. Dr. Bartlett is board certified in ophthalmology by the American Board of Ophthalmology.

Show 7 more questionsShow fewer questions

What services does Dr. William H. Bartlett bill to Medicare?

In 2024, Dr. Bartlett's most billed Medicare services were eye exam or test (92014), eye exam or test (92012) and eye exam or test (92133).

Where did Dr. William H. Bartlett go to medical school?

Dr. Bartlett graduated from Ohio State College of Medicine in 1989.

What drugs does Dr. William H. Bartlett prescribe most?

In 2024 Medicare Part D data, Dr. Bartlett's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Timolol Maleate.

Has Dr. William H. Bartlett received payments from drug or device companies?

CMS Open Payments shows $1,716 in general payments to Dr. Bartlett from 22 companies from 2016 to 2025. The largest total came from Allergan Inc.

How long has Dr. William H. Bartlett been practicing?

Dr. Bartlett graduated from medical school in 1989, 37 years ago.

Does Dr. William H. Bartlett do research?

Dr. Bartlett has worked on 1 clinical trial.

What insurance does Dr. William H. Bartlett accept?

Dr. Bartlett is in network with 14 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

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