Physician Profile
Unclaimed ProfileAbout MASSARELLI
Daniel R Massarelli, M.D. practices internal medicine in Worcester, MA. Daniel is a 1984 graduate of University of Massachusetts Medical School. Medicare claims data shows Daniel provided 1,390 services to 1,245 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (508) 334-8802
- Email not available
Practice Locations
1 W BOYLSTON ST
Worcester, MA 01605
Procedures Most Often Billed to Medicare
1,390 services · 1,245 patients · 16 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
79 |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | Treatment | 93005 |
47 |
| Influenza vaccine, trivalent, 0.5 ml dosage | Treatment | 90658 |
28 |
| Influenza vaccine, inactivated | Treatment | 90653 |
11 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
382 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
360 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
199 |
| Administration of pneumococcal vaccine | Billing code | G0009 |
75 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
50 |
| Administration of influenza virus vaccine | Billing code | G0008 |
42 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 31 related providers in 4 groups
Other internal medicines in Worcester 8
Same specialty, same city.
Trained at University of Massachusetts Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at University of Massachusetts Medical School 7
Providers who graduated from the same medical school in the same year.
Also performs Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 8
Providers in MA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Massarelli?
Dr. Massarelli is an internal medicine in Worcester, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Massarelli's address?
Dr. Massarelli is listed at 1 W BOYLSTON ST, Worcester, MA 01605. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Massarelli?
The number on file is (508) 334-8802. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Massarelli?
Dr. Massarelli's National Provider Identifier is 1467435131. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Massarelli train?
Dr. Massarelli attended University of Massachusetts Medical School, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Massarelli have?
Dr. Massarelli has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Massarelli perform?
According to Medicare billing data, Dr. Massarelli provides treatments such as pneumococcal conjugate vaccine, 20 valent , for intramuscular use and routine electrocardiogram using at least 12 leads with tracing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Massarelli's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Massarelli. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.