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- 40 Walnut Street, Suite 201, Wellesley, MA 02481
About Dr. Holgerson
William B. Holgerson, MD is a healthcare provider in Wellesley, MA specializing in internal medicine. William trained at University of Massachusetts Medical School, graduating in 1975. Medicare claims data shows William provided 2,632 services to 2,091 patients. The services billed most often include 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', established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and insertion of needle into vein for collection of blood sample. This provider record is associated with NPI 1356445829.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (781) 235-1224
- Email not available
Practice Locations
40 WALNUT STREET SUITE 201
Wellesley, MA 02481
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
- Blood clots
Blood disorders
- Anemia
Brain & Nerves
Brain and nerves
Cardiac and vascular
- AFib
Digestive
Heart & Circulation
- Heart disease
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
- EKG
- Spirometry
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
- Endoscopy
Exams & Consultations
- Pre-Op Clearance Exam
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
- Urinalysis
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
- Ingrown toenail removal
- Suture removal
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
- Knee Joint Injection
Preventive & Routine Care
- Smoking cessation counseling
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
2,632 services · 2,091 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
329 | More often than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
243 | More than most peers in Internal Medicine |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
165 | More than most peers in Internal Medicine |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
83 | More often than most peers in Internal Medicine |
| Administration of psychological or neuropsychological test by technician, first 30 minutes | Treatment | 96138 |
81 | More often than most peers in Internal Medicine |
| 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 | More than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
347 | More often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
285 | More often than most peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
276 | More often than most peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
166 | More than most peers in Internal Medicine |
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 internists 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 internists 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.
Common questions
What kind of doctor is Dr. Holgerson?
Dr. Holgerson is an internist in Wellesley, MA. That is the designation recorded for this NPI in the federal registry, where it is listed 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. Contact the office directly to confirm availability and scheduling.
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
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