IndividualActive

Jonathan Vacik, MD

NPI 1528129640 · Emergency Medicine Physician · Ayer, MA

Provider details

NPI number: 1528129640
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 12824 (NH)

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense 220308 (MA)
Allopathic & Osteopathic Physicians
Emergency Medical Services (Emergency Medicine) Physician207PE0004XLicense 12824 (NH)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(77/100 index)

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

Registry tenure28% of score
19 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
8 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
141 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 Moderate Level of Medical Decision Making99284	66	$117
Emergency Department Visit With High Level of Medical Decision Making99285	41	$171
Emergency Department Visit With Low Level of Medical Decision Making99283	34	$69

Typical Medicare-allowed amounts for these services range $69–$171 (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.

Practice location

200 Groton Rd

Ayer, MA 01432-1168

Phone: (978) 784-9000

Approximate (ZIP-level) locationGet directions

More MA providers

Mailing address

60 High St

Andover, MA 01810-3529

Additional practice locations (7)

201 Highland St
Clinton, MA 01510-1037
Phone: (508) 421-1400
Fax: (508) 421-1490
60 Hospital Rd
Leominster, MA 01453-2205
Phone: (508) 421-1400
Fax: (508) 421-1490
510 N Main St
Leominster, MA 01453-1814
Phone: (508) 421-1400
Fax: (508) 421-1490
157 Union St
Marlborough, MA 01752-1228
Phone: (508) 421-1400
Fax: (508) 421-1490
119 Belmont St
Worcester, MA 01605-2903
Phone: (508) 421-1400
Fax: (508) 421-1490
55 Lake Ave N
Worcester, MA 01655-0002
Phone: (508) 421-1400
Fax: (508) 421-1490
100 Mcgregor St
Manchester, NH 03102-3730
Phone: (603) 663-6472
Fax: (603) 663-6645

Enumerated: 2006-12-12
Last updated: 2020-11-30
Certified: 2020-11-30

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