Nathaniel C. Sears

  • Portsmouth, NH
  • Ophthalmologist
NPI1306103577PAC ID5597055798
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Eyesight Ophthalmic Services

Portsmouth, New Hampshire

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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 and contact details
Medicare PAC ID
5597055798
NPI enumeration date
April 12, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(603) 436-1773
Professional email
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Personal email
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Mobile number
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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 Services
    155 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.

Eyesight Ophthalmic ServicesPortsmouth, New HampshirePrimary
1 group practice or clinicName with a free account1 medical groupName with a free account
See all 3 affiliations for Nathaniel Sears

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.

EHR by site
SiteEHR vendor and product
Eyesight Ophthalmic ServicesAvailable with a free account
+1 more site and 1 medical groupAvailable 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 HampshirePrimaryLicense 24997 · taxonomy 207W00000X
  • Glaucoma specialist (ophthalmology), IowaLicense MD-44380 · taxonomy 207WX0009X

Ophthalmologists near Nathaniel Sears

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

81ophthalmologists in New Hampshire
9ophthalmologists in Portsmouth

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.

Medicare services, 20242,196
Medicare patients750
Paid by Medicare$135,480
Procedure codes17

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.

See all procedures by Nathaniel Sears

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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.

Medicare patients, 2024750
Average age77
Average risk score1.02
Also on Medicaid7%

Nathaniel Sears' Medicare patients by age, 2024

Nathaniel Sears' Medicare patients by sex, 2024

  • Women42156%
  • Men32944%

Chronic conditions among Nathaniel Sears' Medicare patients, 2024

  1. High blood pressure71%
  2. High cholesterol71%
  3. Arthritis38%
  4. Diabetes24%
  5. Ischemic heart disease21%
  6. Anxiety19%
  7. Chronic kidney disease19%
  8. 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.

Part D claims, 20242,313
Drugs named by CMS21
Total drug cost$119,015
Part D patients527

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.

See all prescribing by Nathaniel Sears

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.

Papers6
Years published2011 to 2020

Nathaniel Sears' most frequent co-authors

Recent publications by Nathaniel Sears

See all 6 publications and co-authors

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.

How network discovery works

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.

See all payments to Nathaniel Sears

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.

  1. Medical schoolClvlnd Clinic Lerner College of Med of Case Wstn Rsv University

Source: Dmand AI Professional Profile Data

Sources for Nathaniel C. Sears'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 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile 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 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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