What is Gregory Harders's NPI number?

Gregory Harders's National Provider Identifier (NPI) is 1891746541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gregory Harders's specialty?

Gregory Harders is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Gregory Harders located?

Gregory Harders's practice location on file with NPPES is 3100 Tongass Ave, Ketchikan, AK 99901-5746.

What is Gregory Harders's phone number?

The practice phone number listed in the NPPES registry for Gregory Harders is (907) 225-5171.

Does Gregory Harders accept Medicare?

Gregory Harders is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Gregory Harders's NPI active?

Yes — Gregory Harders's NPI (1891746541) is active in the NPPES registry as of the last update on 2025-10-23.

IndividualActiveAccepts Medicare

Gregory Harders, MD

NPI 1891746541 · Emergency Medicine Physician · Ketchikan, AK

Gregory Harders, MD is a Emergency Medicine Physician provider in Ketchikan, AK (NPI 1891746541).

Provider details

NPI number: 1891746541
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 52680 (TN)

Practice location

3100 Tongass Ave

Ketchikan, AK 99901-5746

Phone: (907) 225-5171

Fax: (907) 370-2533

Street-level locationGet directions

More AK providers

Mailing address

One Vantageway, Suite B240

Nashville, TN 37228-1562

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense 214852 (AK)
Allopathic & Osteopathic Physicians
Emergency Medicine Physician207P00000XLicense 52680 (TN)
Allopathic & Osteopathic Physicians
Emergency Medicine Physician207P00000XLicense 75805 (MN)
Allopathic & Osteopathic Physicians
Personal Emergency Response Attendant146D00000XLicense 28351 (AZ)
Emergency Medical Service Providers

Additional practice locations (1)

1700 Medical Center Parkway
St. Thomas Rutherford Hospital
Murfreesboro, TN 39129
Phone: (615) 329-4020
Fax: (615) 327-5475

Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(79/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
20 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
287 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Emergency Department Visit With High Level of Medical Decision Making99285	132	$175
Emergency Department Visit With Moderate Level of Medical Decision Making99284	106	$118
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010	27	$8
Emergency Department Visit With Low Level of Medical Decision Making99283	22	$69

Typical Medicare-allowed amounts for these services range $8–$175 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Ibuprofen	33	33
Prednisone	26	26
Tramadol Hcl	25	25
Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro	24	22
Azithromycin	19	19
Cephalexin	15	14
Ondansetron Hcl	14	14
Albuterol Sulfate

Enumerated: 2006-05-15
Last updated: 2025-10-23
Certified: 2025-10-23

Frequently asked questions

What is Gregory Harders's NPI number?: Gregory Harders's National Provider Identifier (NPI) is 1891746541, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Gregory Harders's specialty?: Gregory Harders is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Gregory Harders located?: Gregory Harders's practice location on file with NPPES is 3100 Tongass Ave, Ketchikan, AK 99901-5746.
What is Gregory Harders's phone number?: The practice phone number listed in the NPPES registry for Gregory Harders is (907) 225-5171.
Does Gregory Harders accept Medicare?: Gregory Harders is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Gregory Harders's NPI active?: Yes — Gregory Harders's NPI (1891746541) is active in the NPPES registry as of the last update on 2025-10-23.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Emergency Department Visit With High Level of Medical Decision Making99285	132	$175
Emergency Department Visit With Moderate Level of Medical Decision Making99284	106	$118
Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010	27	$8
Emergency Department Visit With Low Level of Medical Decision Making99283	22	$69

Drug

Part D claims (2024)

Beneficiaries

Ibuprofen

Prednisone

Tramadol Hcl

Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro

Azithromycin

Cephalexin

Ondansetron Hcl

Albuterol Sulfate

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)