Active NPI 1689761959 Individual Practitioner Male Practitioner

Dr. William James Mugg , MD

Internal Medicine • So Hadley, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. William Mugg, MD is a certified Internal Medicine practicing in So Hadley, MA. With approximately 56 years of clinical experience since graduating from University Of Michigan Medical School in 1970, Dr. Mugg delivers high-quality medical care to the local community at 96 LYMAN ST.

Dr. Mugg accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, 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, routine ekg using at least 12 leads including interpretation and report. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

96 Lyman St

So Hadley, MA 01075

Telephone 4135337176

Fax 4135520181

Associated Practice Facility / Clinic

🏢 Balanced Healing & Therapy Llc Facility NPI 1205761277

Medicare Profile & Education

Medical School

University Of Michigan Medical School

Graduation Year

1970

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in So Hadley, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

56 Yrs Matches City Avg

City Avg: 56.0 Yrs

State Avg: 29.3 Yrs

Regional Practice Density

1 Specialists

Practicing in So Hadley, MA (7127 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

27.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mugg (56 Years) 56 Yrs

So Hadley Specialty Average (56.0 Years) 56.0 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	691	170	$145.00	$126.16
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	197	113	$20.00	$15.88
99213 Established patient office or other outpatient visit, typically 15 minutes	164	89	$110.00	$89.80
93000 Routine ekg using at least 12 leads including interpretation and report	160	146	$54.97	$14.13
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	150	134	$250.00	$177.61
36415 Insertion of needle into vein for collection of blood sample	149	96	$10.00	$8.65
81002 Urinalysis, manual test	143	123	$10.00	$3.41
82272 Stool analysis for blood	106	103	$10.00	$4.15
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	57	20	$175.53	$123.83
G0008 Administration of influenza virus vaccine	55	54	$35.00	$32.81
90658 Influenza vaccine, trivalent, 0.5 ml dosage	50	50	$25.00	$21.42
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	16	14	$75.00	$52.68
69210 Removal of impacted ear wax	14	14	$70.00	$46.97

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	593	164	$145.01	$130.69
99213 Established patient office or other outpatient visit, typically 15 minutes	355	136	$110.10	$92.46
36415 Insertion of needle into vein for collection of blood sample	222	117	$10.00	$8.40
93000 Routine ekg using at least 12 leads including interpretation and report	139	134	$55.00	$14.86
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	139	136	$248.22	$181.85
81002 Urinalysis, manual test	129	116	$10.00	$3.41
82272 Stool analysis for blood	104	104	$10.00	$4.15
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	70	22	$110.00	$77.16
G0008 Administration of influenza virus vaccine	51	51	$35.00	$33.84
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	49	49	$49.80	$20.46
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	28	13	$175.00	$128.95
69210 Removal of impacted ear wax	16	15	$70.00	$48.80
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	16	12	$79.69	$53.83
99496 Transitional care management services for problem of high complexity	16	14	$300.00	$283.52

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	676	171	$145.00	$133.10
99213 Established patient office or other outpatient visit, typically 15 minutes	369	149	$109.91	$93.58
36415 Insertion of needle into vein for collection of blood sample	197	110	$10.00	$2.96
93000 Routine ekg using at least 12 leads including interpretation and report	155	142	$55.00	$14.90
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	150	144	$250.00	$187.34
81002 Urinalysis, manual test	147	129	$10.00	$3.44
82272 Stool analysis for blood	105	104	$10.00	$4.18
G0008 Administration of influenza virus vaccine	67	67	$35.00	$33.64
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	65	18	$110.00	$84.84
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	64	64	$50.00	$20.05
69210 Removal of impacted ear wax	20	18	$70.00	$49.52
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	15	$80.00	$55.24
99496 Transitional care management services for problem of high complexity	13	12	$300.00	$289.41
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	11	11	$70.00	$58.71

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	862	189	$145.00	$135.62
36415 Insertion of needle into vein for collection of blood sample	286	143	$10.00	$3.00
99213 Established patient office or other outpatient visit, typically 15 minutes	230	115	$110.00	$95.39
81002 Urinalysis, manual test	177	150	$10.00	$3.48
93000 Routine ekg using at least 12 leads including interpretation and report	168	157	$55.00	$15.56
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	168	164	$250.00	$189.34
82272 Stool analysis for blood	140	136	$10.00	$4.23
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	75	15	$110.00	$86.26
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	69	11	$90.00	$71.20
G0008 Administration of influenza virus vaccine	64	64	$35.00	$19.51
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	59	59	$50.00	$20.53
69210 Removal of impacted ear wax	28	23	$70.00	$49.14
99496 Transitional care management services for problem of high complexity	19	16	$300.00	$292.38
J1030 Injection, methylprednisolone acetate, 40 mg	18	12	$15.00	$5.67
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	12	12	$112.50	$55.44

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	965	204	$145.00	$114.38
36415 Insertion of needle into vein for collection of blood sample	298	155	$10.00	$2.99
81002 Urinalysis, manual test	195	165	$10.00	$3.46
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	182	175	$250.00	$153.78
99213 Established patient office or other outpatient visit, typically 15 minutes	173	109	$110.00	$78.81
93000 Routine ekg using at least 12 leads including interpretation and report	172	159	$55.00	$18.05
82272 Stool analysis for blood	160	153	$10.00	$4.21
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	124	28	$110.00	$88.00
90756 Vaccine for influenza for injection into muscle	100	98	$50.00	$27.70
G0008 Administration of influenza virus vaccine	98	98	$34.95	$19.02
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	80	11	$90.00	$72.50
69210 Removal of impacted ear wax	33	31	$70.00	$50.84
J1030 Injection, methylprednisolone acetate, 40 mg	20	13	$15.00	$6.06
99496 Transitional care management services for problem of high complexity	17	15	$300.00	$256.36

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	1,016	229	$145.00	$113.40
36415 Insertion of needle into vein for collection of blood sample	293	158	$10.00	$2.94
81002 Urinalysis, manual test	224	184	$10.00	$3.41
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	207	198	$250.00	$151.97
93000 Routine ekg using at least 12 leads including interpretation and report	199	185	$55.00	$17.91
99213 Established patient office or other outpatient visit, typically 15 minutes	191	107	$110.00	$77.70
82272 Stool analysis for blood	170	163	$10.00	$4.15
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	114	28	$110.00	$87.19
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	99	18	$90.00	$71.57
G0008 Administration of influenza virus vaccine	84	84	$35.00	$17.43
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	63	17	$110.00	$95.17
99496 Transitional care management services for problem of high complexity	35	29	$300.00	$241.64
90674 Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free	35	35	$40.00	$27.57
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	31	31	$50.00	$18.65
J1030 Injection, methylprednisolone acetate, 40 mg	26	13	$15.19	$6.25
69210 Removal of impacted ear wax	24	22	$70.00	$49.73
99304 Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	14	12	$180.00	$93.48
90656 Vaccine for influenza for administration into muscle, 0.5 ml dosage	13	13	$25.00	$19.37

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	860	225	$144.96	$109.11
99213 Established patient office or other outpatient visit, typically 15 minutes	460	175	$110.00	$74.06
36415 Insertion of needle into vein for collection of blood sample	308	179	$10.00	$2.94
81002 Urinalysis, manual test	253	214	$10.00	$3.41
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	234	227	$250.00	$147.17
93000 Routine ekg using at least 12 leads including interpretation and report	210	200	$55.00	$17.36
82272 Stool analysis for blood	198	193	$10.00	$4.15
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	176	28	$90.00	$70.07
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	105	28	$110.00	$84.86
G0008 Administration of influenza virus vaccine	65	64	$35.00	$23.21
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	61	30	$110.66	$92.54
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	61	61	$50.00	$18.65
69210 Removal of impacted ear wax	38	37	$70.00	$49.65
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	24	22	$37.00	$8.52
99496 Transitional care management services for problem of high complexity	24	16	$300.00	$235.93
99304 Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	22	18	$180.00	$91.92
J1030 Injection, methylprednisolone acetate, 40 mg	22	14	$15.00	$6.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	758	234	$110.00	$70.81
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	733	228	$145.14	$104.01
81002 Urinalysis, manual test	275	227	$10.00	$3.43
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	262	47	$90.00	$66.59
36415 Insertion of needle into vein for collection of blood sample	256	166	$10.00	$2.94
93000 Routine ekg using at least 12 leads including interpretation and report	251	231	$55.00	$16.58
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	250	240	$250.00	$140.29
82272 Stool analysis for blood	206	195	$10.00	$4.37
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	96	38	$110.00	$88.02
G0008 Administration of influenza virus vaccine	75	74	$35.00	$28.66
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	74	30	$110.00	$81.15
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	68	68	$50.00	$18.65
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	61	52	$37.00	$8.13
69210 Removal of impacted ear wax	42	37	$70.00	$47.76
99304 Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes	37	24	$180.00	$87.59
99496 Transitional care management services for problem of high complexity	32	32	$300.00	$223.63
J1030 Injection, methylprednisolone acetate, 40 mg	21	16	$15.00	$5.74
99318 Nursing facility annual assessment, typically 30 minutes	19	19	$125.00	$92.47

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MA 38722

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

0158992 (MA)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active February 14, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location February 14, 2013

Registered at 96 LYMAN ST, SO HADLEY, MA 01075 (Tel: 4135337176)

📍

Updated Business Mailing Address February 14, 2013

Registered at 96 LYMAN ST, SOUTH HADLEY, MA 010752352 (Tel: 4135337176)

👤

Provider Name / Credentials Updated February 14, 2013

Recorded as WILLIAM MUGG, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 14, 2013

Internal Medicine (License #38722 in MA)

🟢

Initial NPI Registration & Enumeration October 06, 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: 1689761959

Entity Type:

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

Enumeration Date: October 06, 2006

Last Update: February 14, 2013

Sole Proprietor: No

Update or Correct Profile

Mailing Address

96 Lyman St

South Hadley, MA 010752352

Phone: 4135337176

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

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.