Antranig Kalaydjian, M.D.
NPI 1043658735 · Pain Medicine (Anesthesiology) Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Pain Management · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Antranig Kalaydjian, M.D. is a Pain Medicine (Anesthesiology) Physician provider in Worcester, MA (NPI 1043658735).
Provider details
- NPI number
- 1043658735
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 275106 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 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
1,211 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 259 | $129 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 171 | $65 |
| Fluoroscopic Guidance for Needle Placement77002 | 171 | $119 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 146 | $167 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 112 | $91 |
| Injection of Substance Into Lower Spine Canal Using Imaging Guidance |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-05
- Last updated
- 2024-05-22
- Certified
- 2024-05-22
Frequently asked questions
- What is Antranig Kalaydjian's NPI number?
- Antranig Kalaydjian's National Provider Identifier (NPI) is 1043658735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Antranig Kalaydjian's specialty?
- Antranig Kalaydjian is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Antranig Kalaydjian located?
- Antranig Kalaydjian's practice location on file with NPPES is 123 Summer St Ste 370, Worcester, MA 01608-1216.
- What is Antranig Kalaydjian's phone number?
- The practice phone number listed in the NPPES registry for Antranig Kalaydjian is (508) 964-5580.
- Does Antranig Kalaydjian accept Medicare?
- Antranig Kalaydjian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Antranig Kalaydjian's NPI active?
- Yes — Antranig Kalaydjian's NPI (1043658735) is active in the NPPES registry as of the last update on 2024-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.