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DR. JOHN NICHOLAS HARKER DO
NPI 1013026269
Orthopaedic Surgery in Largo, FL

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment
75/100
CMS Quality Rating
12955 SEMINOLE BLVD, LARGO, FL 33778(727) 586-4752 Get Directions Write a Review

NPPES record last updated: September 12, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. John Nicholas Harker Do NPPES

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

DR. JOHN NICHOLAS HARKER DO (NPI 1013026269) is an individual orthopaedic surgery provider in Largo, Florida, licensed in Florida (OS-0006819) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Hca Florida Largo Hospital, and maintains a secondary practice location in Apple Valley.

NPPES Registry Identity

NPI1013026269
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. JOHN NICHOLAS HARKERCredential: DO
Location Address12955 SEMINOLE BLVDLargo, FL 33778-2399
Mailing Address12955 Seminole BlvdLargo, FL 33778-2399 · (727) 586-4752
Phone(727) 586-4752
Sole ProprietorYes
Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 1989
Enumeration DateAugust 30, 2006
Last NPPES UpdateSeptember 12, 2025
NPPES CertifiedSeptember 12, 2025
✔ NPI 1013026269 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
Licenses✔ Licensed in FL · OS-0006819✔ Licensed in CA · 20A23999
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.
12955 SEMINOLE BLVD, Largo, FL 33778
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Secondary Practice Location 1

Location 118523 Corwin Rd Ste AApple Valley, CA 92307-2300 · Phone (909) 712-2764

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AvMed, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company).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. John Nicholas Harker Do 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 ID8729043112
PECOS Enrollment IDI20041124000639, I20260414001514
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.

Areas of Expertise CMS Part B claims 9

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 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.
176 services94 patients
Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
78 services35 patients
Injection, dexamethasone sodium phosphate, 1 mg J1100
Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.
68 services43 patients
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.
38 services33 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
31 services31 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.
30 services30 patients

Hospital Affiliations CMS Care Compare

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

Hca Florida Largo Hospital

Acute Care Hospitals · Largo, FL
2/5 CMS rating
OwnershipProprietary
CMS Certification Number100248
Location201 14th St SWLargo, FL 33770 · Pinellas County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33778 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
$87.62 typical visit price
range $56.00 – $171.84
Typical copayment $21.90 (range $14.00 – $42.96)
Most-billed visit code 99203
Established Patient
$70.04 typical visit price
range $17.57 – $139.16
Typical copayment $17.51 (range $4.39 – $34.79)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Neuromuscular stimulator, electronic shock unit E0745
DME-Other DME · category DE000N
1 supplier18 claims18 services$68.63 avg. paid by Medicare
Standard wheelchair K0001
DME-Wheelchairs · category DD000N
2 suppliers20 claims20 services$17.45 avg. paid by Medicare
Elevating leg rests, pair (for use with capped rental wheelchair base) K0195
DME-Wheelchairs · category DD021N
1 supplier11 claims11 services$7.52 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 5

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

DR. RICHARD F FANSLER MD
Surgery
12955 SEMINOLE BLVD, SUITE 210
LARGO, FL 33778
Pinellas County (727) 584-9500
MARIEL SILVA MUSALEM M.D.
Pediatrics
12955 SEMINOLE BLVD
LARGO, FL 33778
Pinellas County (727) 586-5355
FANSLER ANTERIOR SPINAL ACCESS PL
Specialist
12955 SEMINOLE BLVD
LARGO, FL 33778
Pinellas County (727) 584-9500
SOUTHERN PINELLAS SURGICAL PA
Surgery
12955 SEMINOLE BLVD
LARGO, FL 33778
Pinellas County (727) 584-9500
TRACY S FANSLER MD LLC
Obstetrics & Gynecology
12955 SEMINOLE BLVD
LARGO, FL 33778
Pinellas County (727) 584-9500

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 John Harker's NPI number?

The NPI number for John Harker is 1013026269. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is John Harker located?

John Harker practices at 12955 Seminole Blvd, Largo, FL 33778. The listed phone number is (727) 586-4752.

What is John Harker's specialty?

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

Is John Harker enrolled in Medicare?

Yes. John Harker 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 John Harker accept?

Health plans from AvMed, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list John Harker 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 John Harker affiliated with any hospitals?

According to CMS data, John Harker is affiliated with Hca Florida Largo Hospital.

When was this NPI record last updated?

The NPPES record for John Harker was last updated on September 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.