What is Timothy Greenan's NPI number?

Timothy Greenan's National Provider Identifier (NPI) is 1073562088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Timothy Greenan's specialty?

Timothy Greenan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).

Where is Timothy Greenan located?

Timothy Greenan's practice location on file with NPPES is 14915 Broschart Road, Rockville, MD 20850.

What is Timothy Greenan's phone number?

The practice phone number listed in the NPPES registry for Timothy Greenan is (301) 251-7897.

Does Timothy Greenan accept Medicare?

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

Is Timothy Greenan's NPI active?

Yes — Timothy Greenan's NPI (1073562088) is active in the NPPES registry as of the last update on 2021-10-15.

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Timothy Greenan, M.D.

NPI 1073562088 · Diagnostic Radiology Physician · Rockville, MD

Timothy Greenan, M.D. is a Diagnostic Radiology Physician provider in Rockville, MD (NPI 1073562088).

Provider details

NPI number: 1073562088
Entity type: Individual
Primary specialty: Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: MD044122E (PA)

Practice location

14915 Broschart Road

Suite 102

Rockville, MD 20850

Phone: (301) 251-7897

Fax: (301) 251-7898

Street-level locationGet directions

More MD providers

Mailing address

14915 Broschart Road

Rockville, MD 20850

Specialties & taxonomies

Diagnostic Radiology PhysicianPrimary2085R0202XLicense D0041613 (MD)
Allopathic & Osteopathic Physicians
Specialist174400000XLicense MD044122E (PA)
Other Service Providers
Specialist174400000XLicense D0041613 (MD)
Other Service Providers
Specialist174400000XLicense 205142 (NY)
Other Service Providers

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

Profile Score

Detailed profile(81/100 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
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
2,961 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)
Mri Scan of Leg Joint Without Contrast73721	1,313	$106
Mri Scan of Arm Joint Without Contrast73221	1,031	$108
Mri Scan of Leg Without Contrast73718	247	$122
Mri Scan of Lower Spinal Canal Without Contrast72148	116	$131
Mri Scan of Brain Without Contrast70551	68	$158
Mri Scan of Upper Spinal Canal Without Contrast72141	56

Enumerated: 2006-05-08
Last updated: 2021-10-15
Certified: 2021-10-15

Frequently asked questions

What is Timothy Greenan's NPI number?: Timothy Greenan's National Provider Identifier (NPI) is 1073562088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Timothy Greenan's specialty?: Timothy Greenan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
Where is Timothy Greenan located?: Timothy Greenan's practice location on file with NPPES is 14915 Broschart Road, Rockville, MD 20850.
What is Timothy Greenan's phone number?: The practice phone number listed in the NPPES registry for Timothy Greenan is (301) 251-7897.
Does Timothy Greenan accept Medicare?: Timothy Greenan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Timothy Greenan's NPI active?: Yes — Timothy Greenan's NPI (1073562088) is active in the NPPES registry as of the last update on 2021-10-15.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)