Ophthalmol Glaucoma
Nathaniel C. Sears
- Medicare services, 2024
- 2,196
- Medicare patients, 2024
- 750
- Part D claims, 2024
- 2,313
- Publications
- 6
- MIPS score, 2024
- 80
- Practice address
- 155 Borthwick Ave, Portsmouth, NH 03801
- Practice phone
- Call (603) 436-1773
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eyesight Ophthalmic Services
Portsmouth, New Hampshire
Find Nathaniel Sears' 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.
Nathaniel C. Sears is an ophthalmologist in Portsmouth, New Hampshire
Nathaniel Sears practices at Eyesight Ophthalmic Services in Portsmouth, New Hampshire.
Nathaniel Sears' NPI, 1306103577, was assigned on April 12, 2012. Nathaniel Sears graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2012. Nathaniel Sears holds New Hampshire license 24997.
- NPI
- 1306103577NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597055798
- NPI enumeration date
- April 12, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (603) 436-1773
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathaniel C. Sears practices at Eyesight Ophthalmic Services in Portsmouth, New Hampshire
Nathaniel Sears' primary practice is Eyesight Ophthalmic Services, at 155 Borthwick Ave, Portsmouth, NH 03801 in Rockingham County. The practice phone is (603) 436-1773.
- Eyesight Ophthalmic Services155 Borthwick Ave, Portsmouth, NH 03801 · Rockingham CountyPhone(603) 436-1773
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Nathaniel C. Sears is affiliated with 2 sites of care and 1 medical group
Nathaniel Sears' primary practice is Eyesight Ophthalmic Services in Portsmouth, New Hampshire. Dmand AI also links Nathaniel Sears to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Nathaniel C. Sears' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathaniel Sears practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eyesight Ophthalmic Services | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Nathaniel C. Sears is one of 81 ophthalmologists in New Hampshire
Ophthalmology is Nathaniel Sears' primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Nathaniel Sears' licenses on file in 2 states: New Hampshire and Iowa.
Specialties and state licenses
- Ophthalmology, New HampshirePrimary
- Glaucoma specialist (ophthalmology), Iowa
Ophthalmologists near Nathaniel Sears
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
Nathaniel C. Sears billed Medicare for 2,196 services in 2024
CMS data shows 2,196 Medicare services from Nathaniel Sears across 17 procedure codes in 2024, for 750 Medicare patients. Medicare paid $135,480 for them.
Nathaniel Sears' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,0822024: 1,22213%
- Office and hospital visits
- 2023: 1,0582024: 74530%
- Surgery
- 2023: 892024: 14361%
- Imaging
- 2023: 202024: 86330%
Where Nathaniel Sears' Medicare services took place, 2024
- In an office1,20155%
- In a facility99545%
Nathaniel Sears compared with the New Hampshire median for ophthalmologists, 2024
- Nathaniel Sears
- New Hampshire median
- Medicare services
- 2,196vs 2,218Close to median
- Medicare patients
- 750vs 755Close to median
- Part D claims
- 2,232vs 4894.6 times
Medians across 91 ophthalmologists in New Hampshire with Dmand AI profiles that report each measure.
Nathaniel Sears' 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Nathaniel C. Sears treated 750 Medicare patients in 2024, average age 77
CMS counts 750 Medicare patients who saw Nathaniel Sears in 2024. The largest group is 75 to 84, with 325 patients. 71% of them have high blood pressure, and 71% have high cholesterol. 7% 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 Nathaniel Sears' median patient age at 75, with 52% women.
Nathaniel Sears' Medicare patients by age, 2024
Nathaniel Sears' Medicare patients by sex, 2024
- Women42156%
- Men32944%
Chronic conditions among Nathaniel Sears' Medicare patients, 2024
- High blood pressure71%
- High cholesterol71%
- Arthritis38%
- Diabetes24%
- Ischemic heart disease21%
- Anxiety19%
- Chronic kidney disease19%
- Atrial fibrillation18%
Share of Medicare patients with each condition. A patient can have several.
Nathaniel Sears' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nathaniel C. Sears wrote 2,313 Medicare Part D claims in 2024
In 2024, Nathaniel Sears wrote 2,313 Medicare Part D claims for 527 patients. 78% of them were for generic drugs. CMS names the drug for 2,232 of them, across 21 drugs with 11 or more claims each, at $119,015 in total drug cost. In 2023, CMS named 2,644 claims across 27 drugs.
Nathaniel Sears' Part D claims by kind of drug, 2024
- Generic1,807 claims78%
- Brand-name506 claims22%
Nathaniel Sears' 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 Nathaniel Sears' Part D claims, 2024
- Antibiotics0%11 of 2,313 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: 2,6442024: 2,23216%
Drugs named by CMS: 21 in 2024, 27 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
Nathaniel C. Sears scored 80 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 80 out of 100 for Nathaniel Sears for performance year 2024, reported as part of a group. Nathaniel Sears accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 276 procedures of cataract surgery by Nathaniel Sears, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Nathaniel Sears' MIPS scores, performance year 2024
- 80of 100Final score
- 75.7of 100Quality
- 78of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Nathaniel Sears ranks in Medicare procedure volume
- Cataract surgery
- 88th percentile276 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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Nathaniel C. Sears has 6 publications on record
Dmand AI links 6 papers to Nathaniel Sears, published from 2011 to 2020. 2011 was the busiest year, with 2. Nathaniel Sears has published most often in Ophthalmol Glaucoma. Nathaniel Sears' most frequent co-authors are Karam Alrahman Alawa, MD, Milind S. Deogaonkar, MD and Ryan John Diel, MD.
Nathaniel Sears' most frequent co-authors
- Karam Alrahman Alawa, MD1 shared paper
- Milind S. Deogaonkar, MD1 shared paper
- Ryan John Diel, MD1 shared paper
Recent publications by Nathaniel Sears
Ocular Adnexal Lymphoma Presenting as Refractory Unilateral Open-angle Glaucoma (opens in a new tab)
J Glaucoma
Ophthalmol Glaucoma
See who Nathaniel Sears researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Nathaniel Sears works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Nathaniel C. Sears received $716 in industry payments from 2016 to 2025
CMS Open Payments shows 24 general payments to Nathaniel Sears from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $263.
General payments to Nathaniel Sears by program year, 2016 to 2025
Companies that paid Nathaniel Sears the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Nathaniel C. Sears graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Nathaniel Sears graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Nathaniel C. Sears'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Nathaniel C. Sears
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Nathaniel C. Sears' NPI number?
Nathaniel C. Sears' NPI number is 1306103577. It was assigned on April 12, 2012, and it is active in the NPI Registry.
What does Nathaniel C. Sears specialize in?
Nathaniel C. Sears is an ophthalmologist in Portsmouth, New Hampshire. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Nathaniel C. Sears practice?
Nathaniel Sears practices at 155 Borthwick Ave, Portsmouth, NH 03801. Nathaniel Sears' primary practice is Eyesight Ophthalmic Services in Portsmouth, New Hampshire. Dmand AI also links Nathaniel Sears to 1 group practice or clinic and 1 medical group.
What is Nathaniel C. Sears' office phone number?
The practice phone on file for Nathaniel Sears is (603) 436-1773.
What is Nathaniel C. Sears' medical license number?
Nathaniel Sears holds New Hampshire license 24997, one of the licenses on file in 2 states.
Which states has Nathaniel C. Sears been licensed in?
Dmand AI has state licenses on file for Nathaniel Sears in New Hampshire and Iowa.
Does Nathaniel C. Sears accept Medicare?
Yes. CMS data shows Nathaniel Sears billed Medicare for 2,196 services in 2024, and Nathaniel Sears accepts Medicare assignment.
What is Nathaniel C. Sears' MIPS score?
Nathaniel Sears' MIPS final score for performance year 2024 is 80 out of 100, reported as part of a group.
How many Medicare patients does Nathaniel C. Sears see?
CMS counts 750 Medicare patients who saw Nathaniel Sears in 2024, with an average age of 77.
What services does Nathaniel C. Sears bill to Medicare?
In 2024, Nathaniel Sears' most billed Medicare services were office visit, established patient (99214), eye exam or test (92133) and eye exam or test (92083).
Show 6 more questionsShow fewer questions
Where did Nathaniel C. Sears go to medical school?
Nathaniel Sears graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2012.
What drugs does Nathaniel C. Sears prescribe most?
In 2024 Medicare Part D data, Nathaniel Sears' most prescribed drugs by claims were Latanoprost, Brimonidine Tartrate and Dorzolamide-Timolol.
Has Nathaniel C. Sears received payments from drug or device companies?
CMS Open Payments shows $716 in general payments to Nathaniel Sears from 8 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Nathaniel C. Sears been practicing?
Nathaniel Sears graduated from medical school in 2012, 14 years ago.
Does Nathaniel C. Sears do research?
Dmand AI links 6 publications to Nathaniel Sears, published from 2011 to 2020.
Who does Nathaniel C. Sears publish with?
Nathaniel Sears' most frequent co-authors are Karam Alrahman Alawa, MD (1 shared paper), Milind S. Deogaonkar, MD (1 shared paper) and Ryan John Diel, MD (1 shared paper).
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