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DR. WILLIAM MARTIN OLIVER MD, FRCSED
NPI 1396620621
Orthopaedic Surgery in Somersworth, NH

Active since August 06, 2025PECOS EnrolledAccepts Medicare Assignment
7 MARSH BROOK DR, SOMERSWORTH, NH 03878(603) 742-2007 Get Directions Write a Review

NPPES record last updated: August 13, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Aug 13, 2025, Aug 7, 2025 (2 updates tracked since 2025).

About Dr. William Martin Oliver Md, Frcsed NPPES

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

DR. WILLIAM MARTIN OLIVER MD, FRCSED (NPI 1396620621) is an individual orthopaedic surgery provider in Somersworth, New Hampshire, licensed in New Hampshire (38197) and active in the NPI registry since August 2025. He is enrolled in Medicare PECOS, is affiliated with Wentworth-douglass Hospital, and maintains a secondary practice location in Dover.

NPPES Registry Identity

NPI1396620621
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. WILLIAM MARTIN OLIVERCredential: MD, FRCSED
Location Address7 MARSH BROOK DRSomersworth, NH 03878-6523
Mailing AddressPo Box 412503Boston, MA 02241-2503
Phone(603) 742-2007
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateAugust 6, 2025
Last NPPES UpdateAugust 13, 20252 updates tracked since enumeration
NPPES CertifiedAugust 13, 2025
✔ NPI 1396620621 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in NH · 38197
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
7 MARSH BROOK DR, Somersworth, NH 03878
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Secondary Practice Location 1

Location 1789 Central AveDover, NH 03820-2526 · Phone (603) 742-5252

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Martin Oliver Md, Frcsed 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 ID6800397290
PECOS Enrollment IDI20250828000544
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.

Hospital Affiliations CMS Care Compare 2

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

Wentworth-Douglass Hospital

Acute Care Hospitals · Dover, NH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300018
Location789 Central AveDover, NH 03820 · Strafford County
Emergency services Birthing friendly

Huggins Hospital

Critical Access Hospitals · Wolfeboro, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number301312
Location240 South Main StreetWolfeboro, NH 03894 · Carroll County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03878 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
$89.14 typical visit price
range $57.75 – $174.26
Typical copayment $22.28 (range $14.43 – $43.56)
Most-billed visit code 99203
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 20

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

JULIA S HENRY PT
Physical Therapist
7 MARSH BROOK DR, SUITE 101
SOMERSWORTH, NH 03878
Strafford County (603) 749-6686
AMY MA
Occupational Therapist
7 MARSH BROOK DR, SUITE 101
SOMERSWORTH, NH 03878
Strafford County (603) 749-6686
NOAH CHASSE SAFFORD ATC, LAT
Specialist/Technologist (Athletic Trainer)
7 MARSH BROOK DR
SOMERSWORTH, NH 03878
Strafford County (603) 742-2007
JACOB MICKEY MS, ATC, CSCS, CES
Specialist/Technologist (Athletic Trainer)
7 MARSH BROOK DR
SOMERSWORTH, NH 03878
Strafford County (603) 742-2007
DR. MARK J GEPPERT M.D.
Orthopaedic Surgery
7 MARSH BROOK DR, SUITE 100
SOMERSWORTH, NH 03878
Strafford County (603) 742-2007
KRISTIE ROWLEY
Physical Therapist
7 MARSH BROOK DR, SUITE 101
SOMERSWORTH, NH 03878
Strafford County (603) 749-6686
WILLIAM A OLLAR DO
Anesthesiology
7 MARSH BROOK DR, SUITE 10
SOMERSWORTH, NH 03878
Strafford County (603) 749-7246
ANITA M WEITENDORF PA-C
Physician Assistant
7 MARSH BROOK DR
SOMERSWORTH, NH 03878
Strafford County (603) 742-2007

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Oliver's NPI number?

The NPI number for William Oliver is 1396620621. It was assigned to this individual provider in the NPPES registry on August 6, 2025.

Where is William Oliver located?

William Oliver practices at 7 Marsh Brook Dr, Somersworth, NH 03878. The listed phone number is (603) 742-2007.

What is William Oliver's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is William Oliver enrolled in Medicare?

Yes. William Oliver is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does William Oliver accept?

Health plans from Harvard Pilgrim Health Care list William Oliver as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is William Oliver affiliated with any hospitals?

According to CMS data, William Oliver is affiliated with Wentworth-Douglass Hospital and Huggins Hospital.

When was this NPI record last updated?

The NPPES record for William Oliver was last updated on August 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.