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

JOHN HERBERT REES M.D.
NPI 1033199344
Radiology - Diagnostic Radiology in Baltimore, MD

Active since January 20, 2006PECOS Enrolled
78.18/100
CMS Quality Rating
22 S GREENE ST RM S2A19, BALTIMORE, MD 21201(410) 328-3477(410) 328-0641 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 23, 2026, Aug 21, 2017 (2 updates tracked since 2017).

About John Herbert Rees M.d. NPPES

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

JOHN HERBERT REES M.D. (NPI 1033199344) is an individual diagnostic radiology provider in Baltimore, Maryland, licensed in Maryland (D0047894) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Uf Health Shands Hospital, and is a graduate of Georgetown University School Of Medicine (1981).

NPPES Registry Identity

NPI1033199344
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameJOHN HERBERT REESCredential: M.D.
Location Address22 S GREENE ST RM S2A19Baltimore, MD 21201-1544
Mailing Address22 S Greene St, Rms2a19Baltimore, MD 21201-1544 · (410) 328-3477 · Fax (410) 328-0641
Fax(410) 328-0641
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 1981
Enumeration DateJanuary 20, 2006
Last NPPES UpdateJuly 23, 20262 updates tracked since enumeration
NPPES CertifiedJuly 23, 2026
NPI 1033199344 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses Licensed in MD · D0047894 Licensed in FL · ME73861
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Also ListedRadiology · NeuroradiologyTaxonomy 2085N0700X · License D0047894 (MD)
22 S GREENE ST RM S2A19, Baltimore, MD 21201

Other Identifiers 4

Medicaid965401100MD
Medicaid021574800FL
Other42226TMedicare Ptan
Medicaid104520401MI

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

John Herbert Rees M.d. 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 ID3274517446
PECOS Enrollment IDI20080124000338, I20110823000992
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 36

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.

Ct scan head or brain without contrast 70450
A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.
603 services570 patients
Ct scan of upper spine without contrast 72125
A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.
221 services215 patients
Mri scan of brain before and after contrast 70553
An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.
197 services187 patients
Ct scan of blood vessels of head with contrast 70496
A CT scan of the head's blood vessels with contrast is a diagnostic procedure. A special dye (contrast) is injected into your body to make the blood vessels visible on the scan. This helps identify issues like blockages or abnormalities in your head's blood vessels.
177 services171 patients
Ct scan of blood vessels of neck with contrast 70498
A CT scan of the neck's blood vessels with contrast is a diagnostic procedure. It uses X-rays and a special dye to create detailed images of your neck's blood vessels. This helps doctors detect issues such as blockages or abnormalities.
177 services173 patients
Mri scan of brain without contrast 70551
An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.
104 services100 patients

Hospital Affiliations CMS Care Compare 5

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

Uf Health Shands Hospital

Acute Care Hospitals · Gainesville, FL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100113
Location1600 SW Archer RdGainesville, FL 32610 · Alachua County
Emergency services Birthing friendly

University Of Maryland Medical Center

Acute Care Hospitals · Baltimore, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210002
Location22 South Greene StreetBaltimore, MD 21201 · Baltimore City County
Emergency services Birthing friendly

University Of MD Shore Medical Ctr At Chestertown

Acute Care Hospitals · Chestertown, MD
OwnershipVoluntary non-profit - Private
CMS Certification Number210030
Location100 Brown StreetChestertown, MD 21620 · Kent County
Emergency services

University Of MD Medical Center Midtown Campus

Acute Care Hospitals · Baltimore, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number210038
Location827 Linden AvenueBaltimore, MD 21201 · Baltimore City County
Emergency services

Umd Rehabilitation & Orthopaedic Institute

Acute Care Hospitals · Baltimore, MD
OwnershipVoluntary non-profit - Private
CMS Certification Number210058
Location2200 Kernan DriveBaltimore, MD 21207 · Baltimore County

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21201 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
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
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.

78.18/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality72.54
Promoting Interoperability100
Improvement Activities40
Cost54.74

Other Providers at the Same Location NPPES 9

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

Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Diagnostic Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201
Radiology (Vascular & Interventional Radiology)
22 S GREENE ST RM S2A19
BALTIMORE, MD 21201

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 Rees's NPI number?

The NPI number for John Rees is 1033199344. It was assigned to this individual provider in the NPPES registry on January 20, 2006.

Where is John Rees located?

John Rees practices at 22 S Greene St Rm S2a19, Baltimore, MD 21201. The listed phone number is (410) 328-3477.

What is John Rees's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is John Rees enrolled in Medicare?

Yes. John Rees 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.

Is John Rees affiliated with any hospitals?

According to CMS data, John Rees is affiliated with Uf Health Shands Hospital, University Of Maryland Medical Center, University Of MD Shore Medical Ctr At Chestertown, University Of MD Medical Center Midtown Campus and Umd Rehabilitation & Orthopaedic Institute.

When was this NPI record last updated?

The NPPES record for John Rees was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.