Active NPI 1194195966 Individual Practitioner Female Practitioner

Holly Vanderwerff

Physician Assistant • Troy, MI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Holly Vanderwerff is a certified Physician Assistant practicing in Troy, MI. With approximately 11 years of clinical experience since completing medical education in 2015, Holly Vanderwerff delivers high-quality medical care to the local community at 4600 INVESTMENT DR.

Holly Vanderwerff is affiliated with Affiliated Troy Dermatologists, Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, destruction of up to 14 skin growths, destruction of skin growth. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4600 Investment Dr
Ste 300

Troy, MI 480986365

Telephone 2482675000

Fax 2482675001

Associated Practice Facility / Clinic

🏢 Affiliated Troy Dermatologists, Pllc Facility NPI 1467454264

Medicare Profile & Education

Medical School

Other

Graduation Year

2015

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Troy, MI

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

11 Yrs -1.1 yrs vs City Avg

City Avg: 12.1 Yrs

State Avg: 12.2 Yrs

Regional Practice Density

239 Specialists

Practicing in Troy, MI (7057 Statewide)

Telehealth Adoption Rate

8.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

51.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Vanderwerff (11 Years) 11 Yrs

Troy Specialty Average (12.1 Years) 12.1 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
99213 Established patient office or other outpatient visit, typically 15 minutes	33	31	$145.00	$78.00
17110 Destruction of up to 14 skin growths	21	18	$200.00	$89.36
17000 Destruction of skin growth	20	19	$120.00	$47.74
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	16	$205.00	$109.95

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	92	84	$148.64	$75.52
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	58	$209.38	$107.31
36415 Insertion of needle into vein for collection of blood sample	37	36	$20.00	$8.40
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	20	19	$25.00	$7.27
17110 Destruction of up to 14 skin growths	20	20	$200.00	$97.39
81001 Manual urinalysis test with examination using microscope, automated	18	18	$10.00	$2.95
80048 Blood test, basic group of blood chemicals (calcium, total)	15	14	$35.00	$7.79
84443 Blood test, thyroid stimulating hormone (TSH)	13	13	$40.00	$16.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	311	249	$146.18	$78.46
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	215	160	$198.74	$110.38
36415 Insertion of needle into vein for collection of blood sample	98	84	$20.00	$2.93
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	59	54	$25.00	$7.54
81001 Manual urinalysis test with examination using microscope, automated	57	54	$10.00	$3.03
80048 Blood test, basic group of blood chemicals (calcium, total)	38	33	$35.00	$8.35
84443 Blood test, thyroid stimulating hormone (TSH)	31	27	$40.00	$16.05
93000 Routine ekg using at least 12 leads including interpretation and report	29	26	$52.00	$12.59
80053 Blood test, comprehensive group of blood chemicals	27	27	$45.00	$10.06
83036 Hemoglobin A1C level	23	20	$25.00	$9.57
71046 X-ray of chest, 2 views	18	18	$60.00	$29.49
82306 Vitamin d-3 level	16	16	$70.00	$27.43
80061 Blood test, lipids (cholesterol and triglycerides)	16	16	$40.00	$12.39
99495 Transitional care management services for problem of at least moderate complexity	15	15	$360.00	$178.94
90662 Influenza vaccine split virus, preservative free	14	14	$75.00	$63.64
G0008 Administration of influenza virus vaccine	14	14	$35.00	$27.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	287	244	$130.70	$79.73
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	237	177	$186.71	$113.55
36415 Insertion of needle into vein for collection of blood sample	103	85	$20.00	$3.00
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	60	57	$25.00	$7.77
81001 Manual urinalysis test with examination using microscope, automated	59	56	$10.00	$3.17
80048 Blood test, basic group of blood chemicals (calcium, total)	39	34	$35.00	$8.46
80053 Blood test, comprehensive group of blood chemicals	38	36	$45.00	$10.56
93000 Routine ekg using at least 12 leads including interpretation and report	34	34	$52.00	$13.06
84443 Blood test, thyroid stimulating hormone (TSH)	30	30	$40.00	$16.80
83036 Hemoglobin A1C level	25	22	$25.00	$9.71
82306 Vitamin d-3 level	14	14	$70.00	$29.60
80061 Blood test, lipids (cholesterol and triglycerides)	13	13	$40.00	$13.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	210	183	$130.00	$65.45
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	125	104	$185.00	$93.89
36415 Insertion of needle into vein for collection of blood sample	84	76	$20.00	$2.98
81001 Manual urinalysis test with examination using microscope, automated	60	58	$10.00	$3.16
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	55	53	$25.00	$7.73
80053 Blood test, comprehensive group of blood chemicals	37	35	$45.00	$10.54
80048 Blood test, basic group of blood chemicals (calcium, total)	31	28	$35.00	$8.36
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	23	$80.00	$40.11
93000 Routine ekg using at least 12 leads including interpretation and report	22	22	$52.00	$14.99
84443 Blood test, thyroid stimulating hormone (TSH)	16	16	$40.00	$16.78
G0008 Administration of influenza virus vaccine	13	13	$35.00	$17.02
83036 Hemoglobin A1C level	13	11	$25.00	$9.68
80061 Blood test, lipids (cholesterol and triglycerides)	13	13	$40.00	$13.37
71046 X-ray of chest, 2 views	13	13	$60.00	$28.20
99495 Transitional care management services for problem of at least moderate complexity	12	12	$360.00	$160.04
90662 Influenza vaccine split virus, preservative free	11	11	$73.18	$60.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	296	249	$127.33	$64.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	260	206	$179.69	$93.49
36415 Insertion of needle into vein for collection of blood sample	133	120	$20.00	$2.94
81001 Manual urinalysis test with examination using microscope, automated	96	88	$10.00	$3.34
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	71	67	$25.00	$8.41
80048 Blood test, basic group of blood chemicals (calcium, total)	54	52	$35.00	$9.21
93000 Routine ekg using at least 12 leads including interpretation and report	43	41	$52.00	$14.98
80053 Blood test, comprehensive group of blood chemicals	39	39	$45.00	$11.51
71046 X-ray of chest, 2 views	35	33	$61.71	$27.37
87086 Bacterial colony count, urine	15	15	$15.00	$8.79
87186 Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution	15	15	$35.00	$9.42
84443 Blood test, thyroid stimulating hormone (TSH)	12	12	$40.00	$18.30
83036 Hemoglobin A1C level	12	12	$25.00	$10.57

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	282	246	$125.00	$62.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	239	187	$175.00	$92.83
36415 Insertion of needle into vein for collection of blood sample	111	97	$20.00	$2.94
81001 Manual urinalysis test with examination using microscope, automated	74	66	$10.00	$3.84
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	69	64	$25.00	$9.40
80053 Blood test, comprehensive group of blood chemicals	41	41	$45.00	$12.78
93000 Routine ekg using at least 12 leads including interpretation and report	31	31	$52.00	$14.80
80048 Blood test, basic group of blood chemicals (calcium, total)	27	25	$35.00	$10.23
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	23	23	$240.00	$126.18
80061 Blood test, lipids (cholesterol and triglycerides)	21	21	$40.00	$16.20
71046 X-ray of chest, 2 views	20	20	$65.00	$26.14
84443 Blood test, thyroid stimulating hormone (TSH)	18	17	$40.00	$20.33
G0008 Administration of influenza virus vaccine	15	15	$35.00	$20.55
90662 Influenza vaccine split virus, preservative free	14	14	$65.00	$52.30
83036 Hemoglobin A1C level	14	13	$25.00	$11.75
87804 Detection test by immunoassay with direct visual observation for influenza virus	13	13	$50.00	$16.22

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	278	233	$168.17	$91.49
99213 Established patient office or other outpatient visit, typically 15 minutes	232	207	$120.15	$62.36
36415 Insertion of needle into vein for collection of blood sample	81	75	$12.41	$2.91
81001 Manual urinalysis test with examination using microscope, automated	76	68	$10.00	$4.15
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	43	43	$21.28	$10.25
71020 X-ray of chest, 2 views, front and side	34	32	$64.62	$23.92
80048 Blood test, basic group of blood chemicals (calcium, total)	30	27	$23.27	$11.20
80053 Blood test, comprehensive group of blood chemicals	26	26	$36.88	$12.67
93000 Routine ekg using at least 12 leads including interpretation and report	24	24	$52.00	$14.67
84443 Blood test, thyroid stimulating hormone (TSH)	16	16	$35.00	$22.59
80061 Blood test, lipids (cholesterol and triglycerides)	12	12	$37.08	$12.89
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	11	11	$224.09	$115.89

Medical Specialties & State Licenses

Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License MI 5601007515

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Hospital & Practice Group Affiliations

Affiliated Troy Dermatologists, Pllc

4600 Investment Dr, Troy, MI 480986367

Phone: 2482675020

Practice Associates & Co-Workers

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

25 Associated Practitioners

Dr. Timothy Tinetti , MD

Internal Medicine

NPI 1013976463

Doctor of Medicine (M.D.)

Dr. Janet Dubeck , MD

Internal Medicine

NPI 1033170022

Doctor of Medicine (M.D.)

Dr. James Henderson , MD

Internal Medicine

NPI 1104895127

Doctor of Medicine (M.D.)

Dr. Michael Doyle , MD

Internal Medicine

NPI 1174582779

Doctor of Medicine (M.D.)

Dr. Michael Simpson , MD

Internal Medicine

NPI 1245208321

Doctor of Medicine (M.D.)

Dr. Michelle Biddinger , MD

Internal Medicine

NPI 1326015033

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 October 05, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location October 05, 2015

Registered at 4600 INVESTMENT DR, STE 300, TROY, MI 480986365 (Tel: 2482675000)

📍

Updated Business Mailing Address October 05, 2015

Registered at 4600 INVESTMENT DR, STE 300, TROY, MI 480986365 (Tel: 2482675000)

👤

Provider Name / Credentials Updated October 05, 2015

Recorded as HOLLY VANDERWERFF

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 05, 2015

Physician Assistant (License #5601007515 in MI)

🟢

Initial NPI Registration & Enumeration October 05, 2015

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: 1194195966

Entity Type:

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

Enumeration Date: October 05, 2015

Last Update: October 05, 2015

Sole Proprietor: No

Update or Correct Profile

Mailing Address

4600 Investment Dr, Ste 300

Troy, MI 480986365

Phone: 2482675000

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.