Physician

Aaron Clark, MD, PHD

According to 2025 Medicare claims, Aaron Clark, MD, PHD (NPI: 1518295815) practices neurosurgery in the San Francisco-San Mateo-Redwood City, CA market, with the plurality of this provider's patient population coming from San Francisco, CA. This provider's primary affiliated billing organization is UCSF MEDICAL GROUP BUSINESS SERVICES (NPI: 1477624104; TIN: 943281660) and primary practice location at 94143-2204.

Clark's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 447 traditional Medicare patients, billed 1,825 HCPCS/CPT codes, and received $543,209 in Medicare payments. The top billing code was 63047 (Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment). Part D data shows 91 prescription claims across 39 beneficiaries totaling $2,196 in drug costs, led by Naloxone Hcl (Naloxone Hcl). 2023 DME data shows 12 claims. Open Payments data shows 47 records totaling $41,123. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has risen steadily, from $100,534 to $543,209. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $1,488 and ending at $2,196. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	151	350	$100,534
2016	413	1,168	$386,854
2017	243	943	$341,931
2018	191	941	$405,748
2019	214	906	$400,186
2020	237	990	$394,206
2021	247	1,338	$512,846
2022	507	1,837	$591,170
2023	475	1,841	$596,800
2024	447	1,825	$543,209

Part D Events Trend

Drug cost trend, with N of patients and prescription claims in the table.

Year	Patients	Claims	Drug Cost
2015	13	33	$1,488
2016	49	153	$4,659
2017	47	160	$4,709
2018	52	129	$4,317
2019	71	155	$6,730
2020	60	203	$15,089
2021	67	221	$13,672
2022	67	252	$20,692
2023	58	255	$16,410
2024	39	91	$2,196

DME Billing Trend

Medicare payment trend, with N of patients and DME claim records in the table.

Year	Patients	Claims	Payment
2015	N/R	N/R	N/R
2016	N/R	N/R	N/R
2017	N/R	N/R	N/R
2018	N/R	N/R	N/R
2019	N/R	N/R	N/R
2020	N/R	N/R	N/R
2021	N/R	N/R	N/R
2022	N/R	N/R	N/R
2023	N/R	12	$722
2024	N/R	N/R	N/R

* / # = suppressed by CMS; 0 = reported zero; N/R = not reported or blank.

Top 5 Part B carrier billing codes in 2024

By total payments.

Code	Description	Patients	Clm Lines	Total Payment
63047	Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment	78	78	$724
22614	Fusion of additional segment of spine	82	564	$205
99215	Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	90	91	$118
99204	New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	172	172	$104
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	149	168	$52

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Naloxone Hcl	Naloxone Hcl	18	80	$1,165
Gabapentin	Gabapentin	19	540	$313
Baclofen	Baclofen	30	489	$290

Top 5 DME services in 2024

No connected or detailed DME service-level records for 2024.

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	46	$27,025	Carlsmed, Inc.
Research Payments	Reported research-related payment or transfer-of-value amount.	1	$14,098	Medtronic, Inc.
Ownership / Investment Interests	Reported value of ownership or investment interests.	0	$0	N/R

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FAQ

What Medicare data is available for Aaron Clark, MD, PHD?

Tedicare shows public-source Medicare data for Aaron Clark, MD, PHD (NPI 1518295815), including provider identity, specialty, market context, Medicare Part B activity, Part D prescribing, DME records, Open Payments where available, billing organization details, and ACO affiliation signals where available. Profile data covers 2015-2024, with current attribution based on 2025 claims where available.

Does Aaron Clark, MD, PHD have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to Aaron Clark, MD, PHD?

Aaron Clark, MD, PHD is linked to UCSF MEDICAL GROUP BUSINESS SERVICES (billing NPI 1477624104) in the available physician profile data.

Does Aaron Clark, MD, PHD have Open Payments data?

Aaron Clark, MD, PHD has 47 connected Open Payments records in the available 2024 summary data.

Can I download physician-level Medicare data from Tedicare?

Yes. Tedicare provides sample physician export data and paid custom physician data exports for research, planning, outreach, and market analysis. Exports can include physician profile fields, market and specialty context, billing organization details, ACO affiliation signals where available, and Medicare utilization data.