Physician Profile
Unclaimed ProfileAbout HOLGERSON
William B Holgerson, MD is a healthcare provider in Wellesley, MA specialising in internal medicine. William trained at University of Massachusetts Medical School, graduating in 1975.
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
Common questions
What kind of doctor is Dr. Holgerson?
Dr. Holgerson is an internal medicine in Wellesley, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Holgerson's address?
Dr. Holgerson is listed at 40 WALNUT STREET SUITE 201, Wellesley, MA 02481. 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. Holgerson?
The number on file is (781) 235-1224. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Holgerson?
Dr. Holgerson's National Provider Identifier is 1356445829. 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. Holgerson train?
Dr. Holgerson attended University of Massachusetts Medical School, graduating in 1975. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Holgerson have?
Dr. Holgerson has 51 years experience. Calculated from a graduation year of 1975, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Holgerson perform?
According to Medicare billing data, Dr. Holgerson performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Holgerson's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Holgerson. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (781) 235-1224
- Email not available
Practice Locations
40 WALNUT STREET SUITE 201
Wellesley, MA 02481
Procedures Most Often Billed to Medicare
2,632 services · 2,091 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
329 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
243 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
165 |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
83 |
| Administration of psychological or neuropsychological test by technician, first 30 minutes | Treatment | 96138 |
81 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
520 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
347 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
285 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
276 |
| Administration of influenza virus vaccine | Billing code | G0008 |
166 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileRelated 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.
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.
Other internal medicines in Wellesley 7
Same specialty, same city.
More connections — 19 related providers in 3 groups
Trained at University of Massachusetts Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1975 at University of Massachusetts Medical School 3
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in MA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.