Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

NATHANIEL C SEARS MD
NPI 1306103577
Ophthalmology in Portsmouth, NH

Q: What is Nathaniel Sears's NPI number?

The NPI number for Nathaniel Sears is 1306103577. It was assigned to this individual provider in the NPPES registry on April 12, 2012.

Q: What is Nathaniel Sears's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Nathaniel Sears was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 12, 2012PECOS EnrolledAccepts Medicare Assignment

155 BORTHWICK AVE STE 200E, PORTSMOUTH, NH 03801(603) 436-1773(603) 427-0655 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 21, 2026, Jul 21, 2022, Aug 1, 2017 (3 updates tracked since 2017).

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About Nathaniel C Sears Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NATHANIEL C SEARS MD (NPI 1306103577) is an individual ophthalmology provider in Portsmouth, New Hampshire, licensed in New Hampshire (24997) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Frisbie Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1306103577

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameNATHANIEL C SEARSCredential: MD

Location Address155 BORTHWICK AVE STE 200EPortsmouth, NH 03801-4184

Mailing Address155 Borthwick Ave Ste 200ePortsmouth, NH 03801-4184 · (603) 436-1773

Phone(603) 436-1773

Fax(603) 427-0655

Sole ProprietorNo

Medical School CMSClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv UniversityGraduated 2012

Enumeration DateApril 12, 2012

Last NPPES UpdateSeptember 21, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 21, 2026

✔ NPI 1306103577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

Licenses✔ Licensed in NH · 24997✔ Licensed in ME · MD27646

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Also ListedSpecialistTaxonomy 174400000X · License 24997 (NH), MD27646 (ME)

Also ListedOphthalmology · Glaucoma SpecialistTaxonomy 207WX0009X · License MD-44380 (IA)

155 BORTHWICK AVE STE 200E, Portsmouth, NH 03801

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Secondary Practice Locations 2

Location 1200 Hawkins DrIowa City, IA 52242-1009 · Phone (319) 356-4674

Location 299 US Route 1 Byp Ste BKittery, ME 03904-1792 · Phone (603) 436-1773

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care, WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nathaniel C Sears Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5597055798

PECOS Enrollment IDI20240418001068, I20240418001213

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Nathaniel Sears reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Eyesight Ophthalmic Services PLLC

0.1 mi

Ophthalmology

155 BORTHWICK AVE STE 200E
Portsmouth, NH 03801

Reassigned Medicare billing, Maine and New Hampshire enrollments
6 clinicians in this Medicare group

NPI 1073736310 (603) 436-1773

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 23

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

374 services339 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

237 services189 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

233 services220 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

188 services142 patients

Imaging of optic nerve 92133

161 services158 patients

Exam of the internal drainage system of eye 92020

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

149 services144 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

126 services84 patients

Exam of visual field with extended testing 92083

94 services88 patients

Ultrasound scan of cornea to determine thickness 76514

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

86 services86 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

84 services53 patients

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

66 services62 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

58 services57 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

55 services55 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

51 services45 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

47 services47 patients

Insertion of drug delivery implant into tear duct of eye 68841

This procedure involves placing a small implant into your tear duct. The implant slowly releases medication to your eye, helping manage conditions like dry eyes or glaucoma. It's a simple, quick procedure typically performed under local anesthesia.

46 services33 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

33 services32 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

31 services31 patients

Imaging of retina 92134

22 services20 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

15 services15 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

15 services15 patients

Creation of eye fluid drainage tract for treatment of glaucoma 66170

This procedure, aimed at treating glaucoma, involves creating a small pathway in the eye to allow fluid to drain more effectively. This helps to lower eye pressure and prevent damage to the optic nerve, preserving your vision.

13 services13 patients

New patient problem focused exam of visual system 92002

A new patient problem-focused exam of the visual system is a basic evaluation of your eyes and vision. It includes checking your eye movements, visual acuity, and general eye health. It helps detect any potential issues early for timely treatment.

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Frisbie Memorial Hospital

Acute Care Hospitals · Rochester, NH

2/5 CMS rating

OwnershipProprietary

CMS Certification Number300014

Location11 Whitehall RoadRochester, NH 03867 · Strafford County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$132.09 typical visit price

range $57.75 – $174.26

Typical copayment $33.02 (range $14.43 – $43.56)

Most-billed visit code 99204

Established Patient

$71.85 typical visit price

range $18.70 – $142.15

Typical copayment $17.96 (range $4.67 – $35.53)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EYESIGHT OPHTHALMIC SERVICES PLLC

Ophthalmology