Doctor profile · Federal record

Dr. Mary Bakalos, M.D.

Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Ayer, MA

  • NPI 1629036090
  • Accepts Medicare
  • 35 yrs in practice
  • Female
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
200 Groton RD, Nashoba Valley Medical Center
Ayer, MA 014321168
(978) 784-9270
Mailing address
9 Allan Dr
Maynard, MA 017541909

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
1991 — 35 yrs since
Specialty taxonomy
2085R0202X — NUCC code
State license (1)
Massachusetts #154232

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1629036090. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,853
Distinct HCPCS
10
Medicare allowed
$46,204
HCPCS Description Services Patients Avg allowed
71045 X-ray of chest, 1 view 314 300 $9
71046 X-ray of chest, 2 views 165 161 $11
71250 Ct scan of chest without contrast 109 104 $55
73562 X-ray of knee, 3 views 105 80 $10
77063 Screening 3d breast mammography 91 91 $31
77067 Screening mammography 91 91 $39
77080 Dxa bone density measurement of hip, pelvis, spine 69 69 $10
73630 X-ray of foot, minimum of 3 views 60 50 $8
76536 Ultrasound scan of head and neck soft tissue 53 53 $29
73030 X-ray of shoulder, minimum of 2 views 52 44 $10

In context: peer comparison

Among 2 peers in Ayer Diagnostic Radiology Physician, average services per provider: 44. This provider delivers 42× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Mary Bakalos's medical specialty?
Dr. Mary Bakalos practices Diagnostic Radiology Physician in Ayer, MA.
Where does Dr. Mary Bakalos practice?
Dr. Mary Bakalos practices at 200 Groton RD, Ayer, MA 014321168. Office phone: 9787849270.
What is Dr. Mary Bakalos's NPI?
Dr. Mary Bakalos's National Provider Identifier (NPI) is 1629036090, issued by NPPES.
Does Dr. Mary Bakalos accept Medicare assignment?
Yes. Dr. Mary Bakalos accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Bakalos commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); X-ray of chest, 2 views (HCPCS 71046); Ct scan of chest without contrast (HCPCS 71250). Source: CMS Medicare Physician & Other Practitioners file.