Active NPI 1356445829 Individual Practitioner Male Practitioner

Dr. William B Holgerson , MD

Internal Medicine • Wellesley, MA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. William Holgerson, MD is a certified Internal Medicine practicing in Wellesley, MA. With approximately 51 years of clinical experience since graduating from University Of Massachusetts Medical School in 1975, Dr. Holgerson delivers high-quality medical care to the local community at 40 WALNUT STREET.

Dr. Holgerson is affiliated with Newton Wellesley Primary Care P C and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services 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's, established patient outpatient office visit, insertion of needle into vein for collection of blood sample. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

40 Walnut Street
Suite 201

Wellesley, MA 024812102

Telephone 7812351224

Fax 7812354111

Medicare Profile & Education

Medical School

University Of Massachusetts Medical School

Graduation Year

1975

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Wellesley, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

51 Yrs +21.2 yrs vs City Avg

City Avg: 29.8 Yrs

State Avg: 29.3 Yrs

Regional Practice Density

82 Specialists

Practicing in Wellesley, MA (7127 Statewide)

Telehealth Adoption Rate

54.9% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

56.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Holgerson (51 Years) 51 Yrs

Wellesley Specialty Average (29.8 Years) 29.8 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G2211 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's	520	282	$18.00	$17.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	347	233	$396.09	$139.49
36415 Insertion of needle into vein for collection of blood sample	329	253	$21.00	$8.65
99213 Established patient office or other outpatient visit, typically 15 minutes	285	179	$279.72	$99.43
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	276	276	$310.00	$141.23
93000 Routine ekg using at least 12 leads including interpretation and report	243	236	$75.00	$15.79
G0008 Administration of influenza virus vaccine	166	166	$91.95	$35.30
90662 Influenza vaccine split virus, preservative free	165	165	$165.90	$81.58
82270 Stool analysis for blood to screen for colon tumors	126	126	$25.00	$4.29
96132 Evaluation of neuropsychological test, first hour	83	83	$180.00	$136.73
96138 Administration of psychological or neuropsychological test by technician, first 30 minutes	81	81	$50.00	$40.15
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$450.00	$178.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	448	239	$271.59	$99.65
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	259	259	$310.00	$141.83
93000 Routine ekg using at least 12 leads including interpretation and report	248	224	$75.00	$16.16
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	245	162	$381.24	$140.50
G0008 Administration of influenza virus vaccine	161	161	$90.00	$33.84
90662 Influenza vaccine split virus, preservative free	160	160	$162.00	$71.93
82270 Stool analysis for blood to screen for colon tumors	120	120	$25.00	$4.29
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	19	19	$270.00	$264.60
G0009 Administration of pneumococcal vaccine	18	18	$90.00	$33.84
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	14	$172.06	$63.05
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	12	12	$450.00	$180.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	446	215	$262.39	$101.45
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	248	165	$364.82	$143.23
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	245	245	$310.00	$145.96
93000 Routine ekg using at least 12 leads including interpretation and report	239	215	$75.00	$16.19
G0008 Administration of influenza virus vaccine	172	171	$90.47	$33.70
90662 Influenza vaccine split virus, preservative free	169	168	$154.41	$68.46
82270 Stool analysis for blood to screen for colon tumors	117	117	$25.00	$4.33
G0009 Administration of pneumococcal vaccine	25	25	$106.80	$33.93
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	23	23	$270.00	$265.32
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	20	20	$450.00	$185.28
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report	18	18	$75.00	$16.19
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	13	$166.79	$63.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	401	221	$332.01	$145.75
99213 Established patient office or other outpatient visit, typically 15 minutes	337	187	$235.18	$102.99
93000 Routine ekg using at least 12 leads including interpretation and report	231	219	$75.00	$16.88
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	225	225	$310.00	$148.81
G0008 Administration of influenza virus vaccine	174	172	$110.00	$19.52
90662 Influenza vaccine split virus, preservative free	172	170	$130.00	$65.21
82270 Stool analysis for blood to screen for colon tumors	125	125	$25.00	$4.38
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	19	15	$429.21	$202.68
0011A Adm sarscov2 100mcg/0.5ml1st	17	17	$26.76	$19.53
69210 Removal of impacted ear wax	16	15	$150.00	$53.94
0012A Adm sarscov2 100mcg/0.5ml2nd	16	16	$35.00	$32.24
G0009 Administration of pneumococcal vaccine	15	15	$150.00	$19.50
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	12	$148.08	$64.03
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$450.00	$188.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	352	195	$310.00	$122.10
99213 Established patient office or other outpatient visit, typically 15 minutes	272	152	$215.00	$84.44
93000 Routine ekg using at least 12 leads including interpretation and report	232	217	$75.00	$19.49
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	220	220	$310.00	$129.50
G0008 Administration of influenza virus vaccine	165	163	$109.39	$19.02
90662 Influenza vaccine split virus, preservative free	163	161	$129.85	$60.79
82270 Stool analysis for blood to screen for colon tumors	104	104	$25.00	$4.31
99442 Telephone medical discussion with physician, 11-20 minutes	23	20	$215.00	$84.10
G0009 Administration of pneumococcal vaccine	18	18	$136.67	$18.95
99441 Telephone medical discussion with physician, 5-10 minutes	15	14	$135.00	$51.61
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	13	13	$265.38	$118.08

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	475	229	$215.00	$82.29
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	436	211	$309.51	$119.94
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	224	224	$310.00	$128.43
G0008 Administration of influenza virus vaccine	175	173	$89.77	$18.65
90662 Influenza vaccine split virus, preservative free	169	167	$123.93	$54.83
82270 Stool analysis for blood to screen for colon tumors	103	103	$25.00	$4.29
G0009 Administration of pneumococcal vaccine	30	30	$88.67	$18.65
93000 Routine ekg using at least 12 leads including interpretation and report	28	26	$75.00	$19.12
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	17	17	$242.94	$109.69
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	16	14	$135.00	$50.49
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	16	16	$450.00	$182.13
90670 Pneumococcal vaccine for injection into muscle	14	14	$230.00	$207.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	601	253	$215.00	$80.91
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	359	189	$303.41	$119.01
G0008 Administration of influenza virus vaccine	215	213	$80.00	$23.21
90662 Influenza vaccine split virus, preservative free	211	209	$80.00	$52.22
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	195	195	$310.00	$129.54
82270 Stool analysis for blood to screen for colon tumors	79	79	$25.00	$4.29
93000 Routine ekg using at least 12 leads including interpretation and report	39	37	$75.00	$19.09
G0009 Administration of pneumococcal vaccine	31	31	$80.00	$23.21
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	24	24	$220.00	$105.59
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	16	16	$450.00	$183.18
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	15	14	$200.00	$59.81
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$392.50	$159.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	556	222	$208.71	$79.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	547	272	$296.11	$116.49
G0008 Administration of influenza virus vaccine	210	209	$80.00	$28.66
90662 Influenza vaccine split virus, preservative free	205	204	$80.00	$47.96
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	35	35	$310.00	$126.21
G0009 Administration of pneumococcal vaccine	29	29	$80.00	$28.66
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	28	25	$129.29	$47.98
93000 Routine ekg using at least 12 leads including interpretation and report	26	24	$75.00	$18.75
82272 Stool analysis for blood	22	21	$25.00	$4.37
90670 Pneumococcal vaccine for injection into muscle	15	15	$230.00	$186.52
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	14	14	$215.71	$95.62
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	13	12	$200.00	$58.81
82270 Stool analysis for blood to screen for colon tumors	12	12	$25.00	$4.37

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MA MA42491

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

2063905 (MA)

Commercial Insurance / Payer ID Cigna

4104100003 (MA)

Commercial Insurance / Payer ID Railroad Medicare

445111087 (MA)

Commercial Insurance / Payer ID Harvard Pilgrim Health

61775 (MA)

Commercial Insurance / Payer ID United Healthcare

04-01896 (MA)

Commercial Insurance / Payer ID Tufts

706659 (MA)

Commercial Insurance / Payer ID Blueshield Of Ma

B33544 (MA)

Hospital & Practice Group Affiliations

Newton Wellesley Primary Care P C

40 Walnut St, Wellesley, MA 024812102

Phone: 7812351224

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

5 Associated Practitioners

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Doctor of Medicine (M.D.)

Dr. Edward Legare , MD

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Doctor of Medicine (M.D.)

Dr. Kathryn Deanzeris , MD

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NPI 1922056035

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active January 20, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location January 20, 2016

Registered at 40 WALNUT STREET, SUITE 201, WELLESLEY, MA 024812102 (Tel: 7812351224)

📍

Updated Business Mailing Address January 20, 2016

Registered at 40 WALNUT STREET, SUITE 201, WELLESLEY, MA 024812102 (Tel: 7812351224)

👤

Provider Name / Credentials Updated January 20, 2016

Recorded as WILLIAM HOLGERSON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) January 20, 2016

Internal Medicine (License #MA42491 in MA)

🟢

Initial NPI Registration & Enumeration September 12, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1356445829

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: September 12, 2006

Last Update: June 26, 2019

Sole Proprietor: No

Update or Correct Profile

Mailing Address

40 Walnut Street, Suite 201

Wellesley, MA 024812102

Phone: 7812351224

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

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